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Restoring oil well sites with moss

June 16, 2025 By EarthWise Leave a Comment

Researchers at the University of Waterloo in Canada have developed a method for restoring peatlands at tens of thousands of oil and gas exploration sites in Western Canada. 

A well pad is a prepared area used for drilling oil or gas wells, encompassing the site where drilling equipment, wellheads, and related facilities are located.  Preparing well pads involves burying native peatland vegetation under clay or sand, thereby eliminating the ability of the peatland to sequester carbon as well reducing available habitat for wildlife.

Restoring well sites has typically involved planting trees or grasses to eventually establish forests or grasslands.  The Waterloo method returns a well pad to its condition before drilling occurred and is part of ongoing efforts to restore peatlands, which are known to be even more effective for sequestering carbon than tropical forests.

The Waterloo technique involves lowering the surface of a decommissioned well site and transplanting native mosses onto it to effectively recreate a peatland.    They tested the technique to scale at an entire well pad and found that it results in sufficient water for the growth of peatland moss across large portions of the study site.

The results suggest that re-establishment of peatland vegetation on lowered well pads is possible.  The researchers plan to continue monitoring the ecosystem in the study’s well pads to confirm that the transplanted mosses will be self-sustaining over the coming decades.  They will focus on increasing the amount of water that flows from surrounding natural peatlands into the converted well pads to further optimize soil moisture. 

This work could represent an important milestone in ecological restoration.

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Restoring oil wells back to nature with moss

Photo, posted November 6, 2014, courtesy of Chris Boyer / Kestrel Aerial Services via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Enhanced Geothermal Energy | Earth Wise

October 17, 2023 By EarthWise Leave a Comment

Enhanced geothermal energy

Steam produced by underground heat is an excellent source of clean energy.  In a few fortunate places around the world – notably Iceland and New Zealand – people have been using this source of power for more than a century.   In the U.S., a few places in the West have access to geothermal energy, and thus it provides roughly half-a-percent of the total U.S. power supply.

There is no shortage of underground heat but tapping into it is not so easy.  Enhanced geothermal energy refers to drilling down to where the rock is hot and injecting water to be heated and thereby provide steam that is then used to generate electricity.  According to the Department of Energy, there is enough energy in the rocks below the surface of the US to power the entire country five times over.

Recently, in northern Nevada, a company called Fervo Energy successfully operated an enhanced geothermal system called Project Red that generated 3.5 megawatts of clean electricity, the largest enhanced geothermal plant ever demonstrated.

There are now multiple start-up companies pursuing enhanced geothermal energy and the reason is somewhat ironic.  Much of the research and development needed for new geothermal technologies has already been done by the oil and gas industry for their own purposes  – notably fracking.  Those industries have gotten extremely skilled at drilling into rock and such skills are what are needed for enhanced geothermal technology.

Enhanced geothermal faces some of the same challenges as drilling for gas, such as intensive water use and potential triggering of earthquakes.  There are also issues related to permitting.  But the urgent need for more sources of clean energy has made enhanced geothermal energy a potentially very valuable addition to our energy portfolio.

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Enhanced Geothermal Could Be A Missing Piece Of America’s Climate Puzzle

Photo, posted October 12, 2022, courtesy of David Stanley via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Big Oil And Big Lithium | Earth Wise

July 7, 2023 By EarthWise Leave a Comment

Big Oil entering the lithium market

The world’s big oil companies have worked pretty hard to prolong society’s dependence on petroleum.  When there are trillions of dollars at stake, there is plenty of motivation.  But those companies do see the writing on the wall.

An Exxon Mobil-funded study last year estimated that light-duty vehicle demand for combustion engine fuels could peak in 2025 and that electric vehicles of various types could grow to more than 50% of new car sales by 2050.  This is pretty pessimistic compared with most other surveys, but it is still a big number.  Exxon also projected that the global fleet of EVs could reach 420 million by 2040.

As a result of all this, Exxon is preparing for a future far less dependent on gasoline by drilling for lithium rather than oil.  The company recently purchased mining rights to a sizable chunk of Arkansas land for over $100 million from which it aims to produce lithium for electric car batteries.

Exxon’s consultants estimated that the 120,000 acres in the Smackover formation of southern Arkansas could have as much as 4 million tons of lithium carbonate, enough to power 50 million cars and trucks. 

Exxon plans to spend $17 billion through 2027 on cutting carbon emissions and developing low carbon technologies.  Other large oil producers have also been looking at the lithium business.  At the same time, some large oil companies like BP and Shell are investing in renewable energy.

The prospect of EVs dominating transportation in the coming decades is a strong incentive for oil-and-gas companies to adapt their businesses to the new world.

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Exxon Joins Hunt for Lithium in Bet on EV Boom

Photo, posted August 16, 2014, courtesy of Mike Mozart via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Abandoned Oil Wells In The Gulf Of Mexico | Earth Wise

June 7, 2023 By EarthWise Leave a Comment

Abandoned and unplugged oil wells pose a major risk to the environment

There have been offshore oil platforms in the Gulf of Mexico for 85 years.  After all those decades of drilling, there are now more than 14,000 old, unplugged wells out in the water, and they are at risk of springing dangerous leaks and spills.  There are now more unplugged, non-producing wells than active wells in the gulf.   According to a new study, plugging all those abandoned wells could cost more than $30 billion.

Most of these wells are in federal waters and nearly 90% of them were owned at some point by one of the so-called supermajor oil companies:  BP, Shell, Chevron, and Exxon.  Under federal law, those companies would still be responsible for cleanup costs, even if they might have sold the wells in the past.

Oil and gas companies are legally responsible for plugging wells that are no longer in service, but such companies often go bankrupt, leaving wells orphaned and unplugged and taxpayers end up footing the bill.  The 2021 trillion-dollar infrastructure bill sets aside $4.7 billion to plug orphaned wells, but that is nowhere near enough.  

It may be possible to go after the supermajors to get them to pay for plugging wells in federal waters, but it will undoubtedly be a battle.   In state waters, whose wells are generally in shallower locations, it is even more urgent to act because any pollution from the wells is more likely to reach shore and wreak environmental havoc.

As the world starts to transition away from fossil fuels, decades of mining and drilling in almost every corner of the world, including the oceans, has left behind the need for an immense plugging and cleanup effort.

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Price to Plug Old Wells in Gulf of Mexico? $30 Billion, Study Says

Photo, posted July 8, 2010, courtesy of John Masson / Coast Guard via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Oil Drilling In Los Angeles | Earth Wise      

February 24, 2022 By EarthWise Leave a Comment

Los Angeles may close its oil drilling chapter

Movies were not the first industry to boom in Los Angeles.  Oil was.  There was a lot of it, and it flowed close to the surface triggering rampant drilling all over the area.  By the 1920s, Los Angeles was one of the largest oil-exporting regions in the world.

A century later, there are over 20,000 active, idle, or abandoned wells spread across LA county, home to 10 million people.  Some are hidden behind facades; others are plainly visible, pumping away day and night.  About a third of Angelenos live less than a mile from an active well site.  In the last 20 years, improved oil extraction technology has actually led to a resurgence of oil drilling in Los Angeles.

Studies of the health impact of LA’s oil wells found that asthma is significantly more common among people living near oil wells than elsewhere in the county.  Surveys of residents’ lung functions revealed lower function on average when people live near wells.   Measurements of toxins in the air – such as benzene, toluene, and n-hexane – showed that levels of these substances were significantly reduced when oil production at a site stopped.

This issue has finally come to the forefront after a nearly a decade of community organizing and studies of adverse health effects.  In a unanimous vote on January 26, the Los Angeles City Council took the first step toward phasing out all oil and gas extraction in the city by declaring oil extraction a nonconforming land use.  The LA County Board of Supervisors voted unanimously to phase out oil extraction in unincorporated county areas.  Los Angeles’ long, troubled history with urban oil drilling appears to be nearing an end.

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Los Angeles’ long, troubled history with urban oil drilling is nearing an end after years of health concerns

Photo, posted March 26, 2016, courtesy of Giuseppe Milo via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

California’s Silent Health Hazard | Earth Wise

April 23, 2021 By EarthWise Leave a Comment

California oil wells a silent public health hazard

For people in the Los Angeles area, it is a familiar sight to see oil wells pumping away on hillsides, in residential neighborhoods, and other places.  In fancier parts of town, oil wells are hidden behind facades located next door to dry cleaners and lamp stores.

Every year, more than 140 million barrels of oil are extracted from the state of California, coming from a vast subterranean formation that spans nearly the entire state along the coast and spreading inland as well.  About 30% of the state’s oil comes from the Los Angeles area.

The oilfields are mostly old, and their wells played out.  As a result, high-tech drilling and a slew of toxic chemicals are needed to extract the last dregs of crude oil.

Unlike more rural oil-producing states, where oilfields might be uninhabited except for the people who work on them, drilling in California happens to a large degree in residential settings.  Over the years, it has become increasingly clear that certain chemical byproducts of oil extraction, among them benzene and hydrogen sulfate, can cause a variety of health problems.  For example, recent research has found connections between exposure to oil and gas well sites and spontaneous pre-term births, low-birthweight babies, and other adverse birth outcomes.

Statewide, little is being done to protect residents and schoolchildren from any of the suspected consequences of living near an oil or gas well.  Regulations are weak and spottily enforced because the oil industry still wields a lot of political power in the state.  Environmental groups and justice advocates are actively seeking to create new protections for California citizens, but it remains an uphill battle.

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The Oil Well Next Door: California’s Silent Health Hazard

Photo, posted July 11, 2017, courtesy of John Ciccarelli / Bureau of Land Management California via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Geothermal Power In The Energy Transition | Earth Wise

February 22, 2021 By EarthWise Leave a Comment

Geothermal energy has untapped potential

The heat beneath the earth represents a vast repository of energy that in principle could provide for a significant part of our needs.  In some places, geothermal energy is easy to get to and is already being exploited.  California and Nevada operate dozens of geothermal electric generating plants.  Boise Idaho heats 92 of its biggest buildings with the river of hot water that flows 3,000 feet below the city.  In total, the U.S. produces enough geothermal electricity to power more than a million homes.

But all these examples make use of relatively rare local features that are not available to the great majority of locations.  As a result, geothermal energy has generally not been viewed as being able to play a major role in the alternative energy transition.

A number of experts around the world disagree with this assessment.  To a fair extent due to the deep-drilling techniques and knowledge about underground formations developed by the oil and gas industry during the fracking boom, there is growing interest in a type of geothermal energy called deep geothermal that accesses hot temperatures in the earth’s mantle as far down as two or three miles.

Deep geothermal can either access extremely hot water that exists down at those depths or water can be injected into hot rock down there, which is a technology known as enhanced geothermal systems.

There is enormous untapped potential for geothermal energy.  A 2019 report by the U.S. Department of Energy says that by 2050, geothermal could provide 8.5% of the United States’ electricity as well as direct heat.  Geothermal could be an important part of the so-called all-of-the-above future energy strategy.

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Can Geothermal Power Play a Key Role in the Energy Transition?

Photo, posted August 2, 2008, courtesy of ThinkGeoEnergy via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Restoring Environmental Rules Will Take Time | Earth Wise

February 17, 2021 By EarthWise Leave a Comment

Restoring Obama-era environmental rules will take time

Over the previous four years, the Trump administration weakened or rolled back more than 100 rules and regulations on air, water, public lands, endangered species, and climate change.  The Biden administration has vowed to review these changes and restore the environmental protections that were removed or weakened.

The process of restoring environmental protections generally fall into a few broad categories.  Some changes can happen by executive order.  The President can cancel individual fossil fuel infrastructure projects or reinstate federal protection of specific places.  On his first day in office, President Biden rescinded the construction permit for the Keystone XL pipeline.

The President is also expected to restore federal protection to the Bears Ears and Grand Staircase-Escalante national monuments in Utah, which the Trump administration opened up to mining, logging, and drilling.

However, it could take two years or more to restore Obama-era climate change regulations including limits on emissions, rules on industrial emissions of toxic pollutants such as mercury, and protections on wetlands and waterways.

Reinstating comprehensive regulations on air, water, and climate pollution will take years because the Trump administration, rather than eliminating rules entirely, often replaced them with weaker regulations.  Replacing the weak regulations cannot just happen by executive order.  The process involves scientific and economic analysis, and that takes time.

After four years of shrinking budget and shrinking staff, the Environmental Protection Agency has a lot of catching up to do and will need to prioritize its actions in order to deal with the most damaging consequences of the previous administration.

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Restoring Environmental Rules Rolled Back by Trump Could Take Years

Photo, posted September 25, 2012, courtesy of Tar Sands Blockade via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Drilling Rights In The Arctic National Wildlife Refuge | Earth Wise

February 2, 2021 By EarthWise Leave a Comment

Arctic drilling plans fall through

The battle to prevent oil and gas drilling rights from being sold in the Arctic National Wildlife Refuge in Alaska has been going on for 40 years.  The Trump administration spent nearly four years pushing to auction off those drilling rights and finally accomplished it in early January.

The ANWR was created in 1960 and is the largest intact wilderness in the U.S., covering nearly 30,000 square miles in Alaska.  It is an important breeding habitat for polar bears as well as the home of more than 200 other species including caribou, arctic foxes, golden eagles, and snowy owls.  Parts of it are also sacred ground for the indigenous Gwich’in people.

The auction carved out a 5% slice of the refuge for leases and proponents anticipated it would generate billions of dollars in revenues that would offset tax cuts in Alaska.

Of the 22 parcels of land offered, totaling 1.1 million acres, only 12 were bid on at all and the state of Alaska was the sole bidder on 9 of those.  In total, the auction raised a paltry $14 million. 

Whether the remarkable absence of interest was due to a lack of infrastructure or roads around the region, the decline of fossil fuel investments and use during the pandemic, or the anticipation that any leases would be the subject of endless legal battles by indigenous tribes and environmental activists, the net result was that the auction was basically a flop.

President Biden has stated that he is entirely against Arctic drilling, so the new administration is likely to try to repeal or interfere with any drilling leases or other industrial activity in the ANWR. 

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Arctic Oil Drilling Plans Suffer ‘Stunning Setback’ as Almost ‘No One Shows Up’ For the Sale

Photo, posted July 3, 2019, courtesy of Alaska Region U.S. Fish and Wildlife Service via Flickr. Photo Credit: Danielle Brigida/ USFWS

Earth Wise is a production of WAMC Northeast Public Radio.

Finding Methane Leaks from Space | Earth Wise

December 23, 2020 By EarthWise Leave a Comment

Innovations to detect methane leaks

There is growing concern about the climate effects of methane leaking from oil and gas wells.  The 20-year global warming potential of methane is 84, meaning that over a 20-year period, it traps 84 times more heat per mass unit than carbon dioxide.  Global methane concentrations have increased by nearly a factor of 3 since the industrial revolution.

More than a century of oil and gas drilling has left behind millions of abandoned wells, many of which are leaching pollutants into the air and water.   In the U.S. alone, more than 3.2 million abandoned oil and gas wells emitted 280,000 tons of methane just in 2018.  And the data is incomplete.

Part of the problem is finding out which wells are leaking.  Ground-based sensors or airplanes and drones are effective ways to find leaks but considering how many wells there are to check, the costs are considerable, and the process is time consuming and complicated. 

New technology is coming along that uses satellites to detect methane leaks.  A Canadian company called GHGSat recently used satellites to detect what it has called the smallest methane leak ever seen from space and has begun selling data to emitters interested in pinpointing leaks.

Another company, New York-based Bluefield Technologies, plans a group of satellites for launch in 2023 that promises even finer resolution.  The Environmental Defense Fund, with support from Jeff Bezos’ Earth Fund, plans to launch MethaneSAT in the next couple of years, which is designed to find small sources of methane.

Research at Stanford University determined that just 5% of methane leaks produce around half the total leakage. 

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New Technology Claims to Pinpoint Even Small Methane Leaks From Space

Photo, posted June 8, 2011, courtesy of Jeremy Buckingham via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

The Blue Acceleration | Earth Wise

February 24, 2020 By EarthWise Leave a Comment

Human pressures on world's oceans show no sign of slowing

The oil and gas sector is the largest ocean industry.  It’s responsible for about one third of the value of the ocean economy.  Sand and gravel, destined for the construction industry, are the most mined minerals in the ocean.  And during the past 50 years, approximately 16,000 desalination plants have popped up around the world to help supply people with an increasingly scarce commodity: freshwater. 

As a result of these and other human pressures, the world’s oceans have suffered a lot over time.  But according to a comprehensive new analysis on the state of the ocean, human pressure on the world’s oceans, driven by a combination of technological progress and declining land-based resources, sharply accelerated at the start of the 21st century.  Scientists have dubbed this dramatic increase, which shows no signs of slowing down, the “Blue Acceleration.”

A  research team from Stockholm University analyzed 50 years of data from aquaculture, bioprospecting, shipping, drilling, deep-sea mining, and more.  Their findings were recently published in the journal One Earth.

While claiming ocean resources and space is not new, lead author Jean-Baptiste Jouffray from the Stockholm Resilience Centre says “the extent, intensity, and diversity of today’s aspirations are unprecedented.”

The researchers also highlight how not all human impacts on the ocean are negative.  For example, offshore wind farm technology has reached commercial viability allowing the world to reduce reliance on fossil fuels.

But how can the Blue Acceleration be slowed?  Since only a handful of multinational companies dominate sectors like the seafood industry, oil and gas exploitation, and bioprospecting, one idea is to have banks and other investors adopt more stringent sustainability criteria for making ocean investments. 

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Human pressure on world’s ocean shows no sign of slowing

Photo, posted October 29, 2008, courtesy of Silke Baron via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Smarter Prospecting

November 18, 2019 By EarthWise Leave a Comment

The global demand for copper and gold continues to grow.  Copper is widely used in building materials, plumbing, and electronics.  Gold is still highly valued for jewelry and coinage, but nearly a third of the world’s gold is now used in electronics. 

Both of these metals are getting increasingly difficult to find as many of the known sources have been exhausted.  Companies spend millions of dollars drilling deeper and deeper in search of new deposits.

It costs about $400 to drill one meter into rock and it is not uncommon to drill to depths of one to two kilometers.  So, it can cost nearly a million dollars to drill a hole that has no guarantee of success.  Given that ore deposits are tiny compared with the totality of the search space, prospecting for these metals is very much like looking for a needle in a haystack.

A researcher at the University of South Australia has developed a suite of geochemical tools to more accurately target valuable mineral deposits and thereby save drilling companies millions of dollars.  The goal is to have drilling for valuable minerals be faster, cheaper and more environmentally friendly.

By mapping out where key chemical elements are found in greater concentrations, the new suite of tools greatly increases the chances of finding an ore deposit at a target site and thereby greatly improve the return on investment for exploration companies.  The tools have been successfully tested at an iron oxide-copper-gold deposit in the north of South Australia, leading to a four-fold increase in the known footprint of their ore body.  Finding economically viable enriched ore sites can generate both revenues and jobs.

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Prospecting for gold just got a lot easier (and cheaper)

Photo, posted April 21, 2005, courtesy of Adam via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Fresh Water Under The Sea

July 18, 2019 By EarthWise Leave a Comment

A new survey of the sub-seafloor off the U.S. Northeast coast has revealed the existence of a gigantic aquifer of relatively fresh water trapped in porous sediments lying beneath the salty ocean.  This appears to be the largest such formation ever found.

The newly-discovered aquifer stretches from the shore at least from Massachusetts to New Jersey and extends more-or-less continuously out about 50 miles to the edge of the continental shelf.   The deposits begin at around 600 feet below the ocean floor and bottom out at about 1,200 feet.  If all that water was found on the surface, it could create a lake some 15,000 miles in area.  The researchers estimate that the region holds at least 670 cubic miles of fresh water.

Researchers made use of innovative measurements of electromagnetic waves to map the water, which had not been detected by other technologies.   It was already known that fresh water existed in places under the sea bottom as a result of oil drilling as far back as the 1970s.  But there was previously no hint of the extent of the undersea aquifer. 

The water probably was trapped by sediments deposited during the last ice age when sea levels were much lower.  But modern subterranean runoff from land sources might also be a contributor.

If water from the aquifer was to be withdrawn, it would still have to be desalinated for most uses, but the cost would be much less than processing ordinary seawater.  There is probably no need to do this in the Northeastern US, but the discovery suggests that such aquifers probably lie off many other coasts worldwide and could provide desperately needed water in places like southern California, Australia, the Mideast or Saharan Africa.

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Scientists Map Huge Undersea Fresh-Water Aquifer Off U.S. Northeast

Photo, courtesy of August 1, 2015, courtesy of Michael Vadon via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Drilling In California

May 16, 2019 By EarthWise Leave a Comment

More than one million acres of public and private land in California may soon be opened up to oil drilling and hydraulic fracturing, according to a plan recently released by the Trump Administration.  The proposal raises environmental concerns, and comes at a time when opposition to oil and gas drilling in the state is growing.  

The plan, put forth by the Bureau of Land Management, would end a five-year moratorium in the state on leasing federal public land to oil and gas developers.  In 2013, a federal judge put the moratorium in place until the environmental risks of hydraulic fracturing, or fracking, could be better evaluated.

Fracking is the process of injecting liquid at high pressure underground in order to crack open rocks and extract oil or gas.  Well-documented risks associated with fracking include air and water pollution, as well as increased risks of oil spills and earthquakes.

Nevertheless, the Bureau of Land Management, which is part of the U.S. Department of the Interior, released its 174-page environmental impact statement with the proposal to open up 1,011,470 acres of land to fossil fuel extraction, impacting the California counties of Fresno, Kern, Kings, San Luis Obispo, Santa Barbara, Tulare, and Ventura. 

Unsurprisingly, the draft plan has been praised by industry groups who say concerns are misguided, and slammed by environmentalists who say the move poses a serious public health risk and could lead to a “fracking frenzy.”

The proposal is now subject to a 45-day period for public comment, after which the Interior Department will determine how to proceed.  A link to weigh in on the proposal can be found here.

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Trump fracking plan targets over 1 million acres in California

Bakersfield Field Office Hydraulic Fracturing Draft Supplemental Environmental Impact Statement

Photo, posted March 14, 2010, courtesy of Mike Baird via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Fracking And Streams

March 8, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/03/EW-03-08-18-Fracking-and-Streams.mp3

Hydraulic fracturing – better known as fracking – is a method of extracting oil and gas from shale deposits in which millions of gallons of freshwater and chemicals are injected into deep underground deposits.  There has been a great deal of concern related to the effects that this process has on water quality and also on the stability of the ground in the vicinity of where it takes place.

[Read more…] about Fracking And Streams

Finding Methane Leaks

September 21, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/09/EW-09-21-16-Finding-Methane-Leaks.mp3

The boom in natural gas drilling by conventional methods and by fracking has led to a spike in methane emissions from pipelines, storage tanks, processing facilities, and other parts of the natural gas system.   Natural gas is mostly composed of methane, so these emissions constitute waste and lost revenues.  But they also represent a serious environmental problem because methane is 25 times more effective in trapping atmospheric heat than carbon dioxide.

[Read more…] about Finding Methane Leaks

Is Natural Gas Cleaner Than Coal?

January 7, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/01/EW-01-07-16-Natural-Gas-and-Coal.mp3

The widespread use of hydraulic fracturing (or fracking) as well as improved drilling techniques have created a major boom in natural gas production.  This unquestionably has positive economic impacts for many.  One of the important consequences of this is that natural gas is increasingly taking the place of coal for powering electrical generating plants.

[Read more…] about Is Natural Gas Cleaner Than Coal?

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