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Defeating climate apathy

May 30, 2025 By EarthWise Leave a Comment

How best to defeat climate apathy

Slowing human-caused climate change requires decisive action.  But according to psychologists, the gradual rise in global temperatures can lead to climate apathy, especially among those who don’t face frequent climate disasters.

Climate apathy is a general indifference or lack of emotional or behavioral response to climate change and environmental issues.  People experiencing climate apathy may feel disconnected, overwhelmed, powerless, or simply uninterested in climate issues, leading them to avoid taking action or engaging in conversations about it.

A new study by researchers from UCLA and Princeton University looked into ways to effectively communicate about climate change.  The research team found that presenting people with continuous data, like rising temperatures in a town, gave them only a vague sense of gradual change.  But showing them binary data—like whether a lake froze or not each winter—illustrated the change more effectively. 

In the study, which was recently published in the journal Nature Human Behavior, the researchers showed participants either temperature graphs or lake-freezing data for fictional and real towns in order to measure how each format affected their perceptions of climate impact. Participants who saw whether lakes froze rated climate change as more impactful—12% higher on average—than those who saw only temperature data. 

By focusing on the increasing rate of once-rare events, the researchers hope that the same temperature data that once led to climate apathy may instead help communities care more about the climate crisis.

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UCLA study: How to break through climate apathy

Photo, posted November 20, 2008, courtesy of Brad Saunders via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Saving the Great Salt Lake

January 27, 2025 By EarthWise Leave a Comment

For many years, scientists have warned that the Great Salt Lake in Utah is headed toward a catastrophic decline.  While the size of the Great Salt Lake fluctuates naturally with seasonal and long-term weather patterns, the lake has been experiencing significant and steady declines for decades.  In fact, the Great Salt Lake has lost more than 15 billion cubic yards of water over the past three decades, and it’s getting shallower at the rate of four inches a year. 

This reduction is primarily due to excessive water diversions from rivers and streams that feed into the lake for agricultural, industrial, and municipal use. These diversions, combined with prolonged drought and rising temperatures due to climate change, have significantly reduced the lake’s water level. 

According to a new study led by researchers from Oregon State University, 62% of the river water bound for the Great Salt Lake is diverted for human use, with agricultural activities responsible for nearly three-quarters of that percentage.  The analysis, which was recently published in the journal Environmental Challenges, found that reducing irrigation is necessary to save the lake. 

In order to stabilize and begin refilling the lake, the research team proposes cutting human water consumption in the Great Salt Lake’s watershed by 35%.  The researchers emphasize that farmers and ranchers facing income losses from using less water would require taxpayer-funded compensation.

The Great Salt Lake is a biodiversity hotspot, sustaining more than 10 million migratory birds.  The lake also directly supports 9,000 jobs and fuels $2.5 billion in economic activity annually. 

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Reducing irrigation for livestock feed crops is needed to save Great Salt Lake, study argues

Photo, posted January 14, 2024, courtesy of Olaf Zerbock via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Emissions and the Great Salt Lake

September 4, 2024 By EarthWise Leave a Comment

Emissions and the Great Salt Lake

The Great Salt Lake in Utah has been described as a puddle of its former self.  The lake’s size fluctuates naturally with seasonal and long-term weather patterns, but the lake has been experiencing decline for decades as Utahans take water out of the rivers and streams that once fed the lake.  Over recent decades, the lake has lost 73% of its water and 60% of its surface area.

For years, scientists and environmental leaders have warned that the Great Salt Lake is headed toward a catastrophic decline.  Recent research has found that the lake’s desiccating shores are becoming a significant source of greenhouse gas emissions.  Scientists have calculated that the dried-out portions of the lakebed released about 4.1 million tons of carbon dioxide and other greenhouse gases in 2020.

The recent study, published in the journal One Earth, suggests that the Great Salt Lake – which is largest saltwater lake in the Western Hemisphere – as well as other shrinking saline lakes around the world could become major contributors of climate-warming emissions.

The shrinking back of the water has exposed a dusty lakebed that is laced with arsenic, mercury, lead, and other toxic substances.  Some are naturally occurring, and others are the residue of mining activity in the region.  These substances threaten to increase rates of respiratory conditions, heart and lung disease, and cancers.

As the lake shrinks, it is becoming saltier and uninhabitable to native flies and brine shrimp and may increasingly become unable to support the 10 million migratory birds and wildlife that frequent it.

The new research about greenhouse gas emissions just adds to a dire list of environmental consequences brought on by the lake’s steep decline.

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Shrinking Great Salt Lake Becoming Source of Heat-Trapping Gas

Photo, posted January 20, 2020, courtesy of Matthew Dillon via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

A lake in Death Valley

March 14, 2024 By EarthWise Leave a Comment

A lake has formed in Death Valley

Death Valley in California is the driest place in North America, averaging only 2 inches of rain each year.  Badwater Basin in Death Valley is the lowest point in North America with a depth of 282 feet below sea level.  Currently, Badwater Basin is the site of an ephemeral lake called Lake Manley.

The lake formed again last August after Hurricane Hilary drenched the California desert.  Water levels in the lake dropped throughout the fall, but it never quite dried up.  But then the relentless rains of early February filled the lake once again.

Water that gathers in Badwater Basin usually evaporates faster than it can be replenished, leaving the lakebed dry.  But between the hurricane and the February storm, nearly 4 inches of rain have fallen, and the lake has stayed alive.  There is a river that feeds the lake – the Amargosa – that is really flowing in the aftermath of the storms.

The lake is nearly 7 miles long and 4 miles wide, but the water is only about a foot deep.  This is not the first time it has formed but it is an unusual occurrence.  It formed in 2005, but only lasted about a week.  Death Valley National Park officials expected that the lake would be gone by October, but it persisted into the new year which then brought the atmospheric river-driven California rainstorms.

At this point, it is unclear how long the lake in the driest place in America will be around.  While it is there, visitors to the national park can enjoy beautiful views of the nearby mountains reflected in its waters.

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Deep in Death Valley, a Sprawling Lake Takes Form

Photo, posted February 19, 2024, courtesy of Tom Hilton via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Attack of the giant goldfish

January 15, 2024 By EarthWise Leave a Comment

Giant goldfish are an invasive species

Goldfish are just about the easiest pets to keep.  A species of carp native to East Asia, they have been bred to look pretty and are generally little more than home décor.  We keep them in little glass bowls and feed them mysterious flakes out of a container.  With these confined quarters and meager meals, they remain small, harmless creatures.  But released into the wild, it is a very different story.

People dump pet goldfish into lakes and ponds with some frequency.  Once they are in the wild, these humble creatures can grow to monstrous proportions.  They can eat nearly anything, including algae, aquatic plants, eggs, and invertebrates.  They can kill off native marine wildlife and damage or even destroy fragile and economically valuable ecosystems.

For a few years, Canadian researchers have been tracking invasive goldfish in Hamilton Harbour, at the western tip of Lake Ontario, about 35 miles southwest of Toronto.  That part of the lake has been decimated by industrial and urban development as well as by invasive species.

Goldfish were first spotted in the harbor in the 1960s, mostly died off in the 70s because of industrial contamination, but then recovered in the 2000s.  Goldfish can tolerate a wide range of water temperatures, reach sexual maturity quickly, and can reproduce several times in one season.  In resource-rich places, they can grow up to 16 inches long, making them too large a meal for many predators.

There are literally millions of goldfish in the Great Lakes and not only there.  Feral goldfish are a problem in Australia and in the United Kingdom.  Invasive species are a big problem, even if they start out small and cute.

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Once They Were Pets. Now Giant Goldfish Are Menacing the Great Lakes.

Photo, posted September 20, 2015, courtesy of Watts via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Great Salt Lake In Danger | Earth Wise

March 20, 2023 By EarthWise Leave a Comment

Great Salt Lake is threatened by the changing climate

Utah’s Great Salt Lake has been plagued by excessive water use and extensive drought conditions.  As of January, the lake dropped to record-low water levels, losing 73% of its water and exposing 60% of its lakebed. According to scientists, the lake could disappear entirely within five years.

Great Salt Lake is what is known as a “terminal lake,” which means that it is fed only by rain, snow, and runoff and has no rivers that take water to the ocean.  As a result, salt and minerals build up over time.  With so much salt in the water, only brine flies and shrimp can survive in it.  The unique ecosystem supports 10 million migratory birds.  As the lake continues to dry up, the water is becoming too salty for even algae and microbes to survive.  With shallow mud replacing previous shallow water, the nests of the 80,000 white pelicans that annually come to the lake are endangered by predators that can simply walk over to the eggs.

The historic low water levels have exposed 800 square miles of lakebed.  This lakebed holds centuries of natural and manmade toxins like mercury, arsenic, and selenium.  The exposed mud ultimately turns to dust that is carried off into the air.  This is contributing to what is already some of the worst winter air pollution in the nation.  Scientists warn that the unfolding ecological disaster may become a human health disaster.

State officials and university researchers have formed a “Great Salt Lake Strike Team” looking for ways to get more water to the lake.  There are a number of so-called moonshot proposals to save the lake.  It remains to be seen what will be done, but the clock is ticking.

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Great Salt Lake will disappear in 5 years without massive ‘emergency rescue,’ scientists say

Scientists fear a Great Toxic Dustbowl could soon emerge from the Great Salt Lake

Photo, posted September 19, 2009, courtesy of John Morgan via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

The Great Salt Lake Is Disappearing | Earth Wise

August 31, 2022 By EarthWise Leave a Comment

Utah’s Great Salt Lake is the largest saltwater lake in the western hemisphere.  According to data from the US Geological Survey, the surface water elevation of the Great Salt Lake has fallen to the lowest level since records began in the mid-1800s.  The average elevation is now 4,190 feet above sea level.   With this drop in water level, the surface area of the lake is little more than half of its historical size.  The lower water level has exposed about 700 square miles of previously submerged lakebed.

The lake now contains about a quarter of the volume of water that it did at its high point in 1987.  The precipitous drop in water is a result of water usage from the lake coupled with climate change-fueled drought.   Increased water demand is due to the rapidly growing population of metropolitan Salt Lake City.  Utah’s population is projected to increase by almost 50% by 2060.

The Great Salt Lake goes though seasonal cycles of water loss and replenishment.  Rain and snow generally refill its level.  However, because of the ongoing megadrought in the West, water evaporation and depletion continue to exceed the amount of water entering the lake.  The water levels are expected to further decrease until fall or early winter, when incoming water is expected to equal or exceed evaporation.

The decline of the Great Salt Lake is a serious threat to the economy, ecology, and people of northern Utah.  The lake generates snowpack, is a refuge for hundreds of migratory birds and other wildlife and generates millions of dollars in the economy through mineral extraction and tourism.

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Utah’s Great Salt Lake is disappearing

Photo, posted October 6, 2020, courtesy of Julie Girard via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Lake Tuz Is Disappearing | Earth Wise

January 10, 2022 By EarthWise Leave a Comment

Lake Tuz is Turkey’s second-largest lake and one of the world’s largest hypersaline lakes.  Its high salt content makes it an ideal breeding ground for some migratory bird species, including flamingos, which are often present there in huge numbers in the spring and summer.

Now, Lake Tuz rarely spans an area much larger than a puddle. In some summers, it completely dries up.  It did so this past summer, which resulted in the deaths of thousands of flamingos.

According to experts, Lake Tuz is a victim of climate change-induced drought, which has hit the region hard, and decades of harmful agricultural policies that exhausted the underground water supply.

Water in this region has become increasingly scarce.  The Mediterranean Basin has already seen more frequent and intense droughts, and is considered a climate change hotspot. 

According to new research, which was recently published in the journal Regional Environmental Change, Lake Tuz generally contained enough water in August for the lake to be considered permanent up until 2000.  But between 2001 and 2016, something shifted.  Water spanned less than 20% of the lake in every August except for one, and droughts became more frequent and intense. And in some years, the lake completely dried up.   

What caused this change?  According to the research team, Lake Tuz’s decline coincided with the excessive use of groundwater and surface water resources responsible for feeding the lake.  Some streams were rerouted for agricultural purposes, while others were dammed.  And when surface water sources dwindled, people turned to groundwater that historically fed the springs in Lake Tuz. 

Lake Tuz may be on the brink of extinction. 

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Impact of climate variability on the surface of Lake Tuz (Turkey), 1985–2016

Disappearing Lake Tuz

Photo, posted August 16, 2021, courtesy of Godot via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

A New Low For Lake Powell | Earth Wise

November 2, 2021 By EarthWise Leave a Comment

Water levels in Lake Powell have reached new lows

Lake Powell is the second largest reservoir by capacity in the United States.  It straddles the border of southeastern Utah and northeastern Arizona and was created by the Glen Canyon Dam, completed in 1963.  The reservoir serves as a bank account of water that is drawn upon in times of drought and has made it possible to weather extended droughts by sustaining the needs of cities, industries, and agriculture in western states.  Hydroelectric power by the dam’s eight generators provides electricity to seven states.

As a result of the protracted drought in the west, the water levels in Lake Powell have reached the lowest point since 1969.  As of September 20, the lake held only 30% of its capacity and federal managers started releasing water from upstream reservoirs to help keep Lake Powell from dropping below the so-called minimum power threshold which is the water elevation that must be maintained to keep the dam’s hydropower turbines working properly.

With the entire Lower Colorado River water system below 40% of capacity, Bureau of Reclamation recently announced that water allocations in the U.S. Southwest would be cut over the next year.  The Colorado River basin is managed to provide water to millions of people including those in San Diego, Las Vegas, Phoenix, and Los Angeles. 

Successive dry winter seasons over the past two years along with a failed 2020 summer southwestern monsoon, have led to the lowest precipitation levels on record in the Southwest going at least as far back as 1895.  With warm temperatures, reduced snowpack, and increased evaporation of soil moisture, most of the American West suffers from persistent and widespread drought.

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Lake Powell Reaches New Low

Photo, posted June 28, 2021, courtesy of the USFWS – Mountain Prairie via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

A Record Low For Lake Mead | Earth Wise

October 4, 2021 By EarthWise Leave a Comment

The low water level of Lake Mead is causing regional water shortages

Lake Mead is the reservoir that was formed by the Hoover Dam on the Colorado River.  The lake spans the Arizona-Nevada border.  It is the largest reservoir in the United States in terms of water capacity.  The lake is part of a system that supplies water to at least 40 million people in seven states and in Northern Mexico.

As of August 22, this year, Lake Mead was filled to just 35% of its capacity.  This low water level is happening while 95% of the land in nine Western states is under some level of drought conditions and 64% of the land is under extreme drought conditions.  A so-called megadrought has been going on for 22 years and may be the worst dry spell in the region in twelve centuries.

As of the end of July, the water elevation at the Hoover Dam was 1,067 feet above sea level, the lowest it has been since April 1937 when the lake was still being filled after dam construction.  The level has dropped by 132 feet since July 2000.  At maximum capacity, Lake Mead reaches an elevation of 1,220 feet and holds 9.3 trillion gallons of water.

With Lake Mead at 35% of capacity, Lake Powell on the Colorado at 31%, and the entire Lower Colorado system at 40%, water allocations for the coming water year are being cut back. Mexico will see a 5% reduction, Nevada will be cut 7%, and Arizona will lose 18% of its apportionment.   This unprecedented official declaration of a water shortage demonstrates the severity of the drought and low reservoir conditions.

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Lake Mead Drops to a Record Low

Photo, posted August 7, 2018, courtesy of Renee Grayson via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

The Caspian Sea And Climate Change | Earth Wise

January 22, 2021 By EarthWise Leave a Comment

Climate change will lower water levels in the Caspian Sea

According to the National Oceanic and Atmospheric Administration, global sea levels have been rising over the past century, and the rate has increased in recent decades.  Sea levels are currently rising about one-eighth of an inch every year.

Sea level rise is caused primarily by two factors related to climate change:  the added water from melting glaciers and ice sheets, and the expansion of seawater as it warms.  While climate change is causing global sea levels to rise, higher temperatures in other regions are having exactly the opposite effect.  The water levels are falling.

According to researchers from the University of Bremen in Germany, the Caspian Sea is a perfect example of how a body of water will change.  While it is named a sea due to its size and high salinity, the Caspian Sea is actually a lake.  In fact, it’s the largest lake in the world.  Its largest inflow is the Volga River and it has no natural connection to the ocean.  Its water level is determined by the proportional influences of inflow, precipitation, and evaporation.  Climate change is causing increased evaporation, which leads to a declining water level. 

According to the research team, the water level of the Caspian Sea could fall by 29 to 59 feet during this century.

The Caspian Sea is surrounded by Kazakhstan, Turkmenistan, Iran, Azerbaijan and Russia.  It’s an important regional water reservoir, and a biological and commercial center. 

The researchers hope the Caspian Sea will be used as an example in scientific research to assess the vulnerability of other regions to falling water levels.

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Climate crisis is causing lakes to shrink

Photo, posted October 31, 2016, courtesy of Amanderson2 via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Road Salt Pollution

January 8, 2020 By EarthWise 1 Comment

Road salt pollution mirror lake

Mirror Lake is a popular recreational lake located in the Village of Lake Placid.  It is the most developed lake within the Adirondack Park, which is a publicly protected area that is actually larger than Yellowstone, Yosemite, Glacier, and Grand Canyon National Parks combined.

New research has revealed that road salt runoff into Mirror Lake is preventing natural water turnover which poses a risk to the balance of its ecology.  The study, which was published in Lake and Reservoir Management, found that road salt runoff is preventing spring mixing of the water column.    This creates more anoxic water conditions, meaning there is less oxygen in the water, and limits the ability of the habitat to support the native lake trout. 

Mirror Lake is the first lake in the Adirondack Park to show an interruption in lake turnover due to road salt.  Many lakes in northern climes experience so-called “dimictic turnover”, which is a natural process where wind and less stratified water conditions of spring and fall allow mixing of the water column that redistribute oxygen and nutrients throughout the lake.  High levels of surface-water chloride introduced into the lake from road salt runoff inhibit the mixing of the water column.

The lack of mixing and oxygenation is bad news for fish species such as lake trout, which require cold, oxygenated water to survive.  It may also put the lake at a greater risk of algal blooms.

Mirror Lake is small, surrounded by concentrated development, and receives the direct discharge of stormwater.  So, it is particularly vulnerable to road salt contamination.  Other lakes elsewhere in New York may experience similar conditions.  The researchers are confident that natural turnover conditions could be restored to the lake if road salt application in the watershed is reduced.

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Road salt pollutes lake in one of the largest US protected areas, new study shows

Photo, posted January 5, 2018, courtesy of MTA of the State of NY via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Lake George Health Report

December 26, 2019 By EarthWise Leave a Comment

The Offshore Chemistry Program, run by the Darrin Fresh Water Institute at RPI, has been monitoring the deep waters of Lake George in New York for 40 years.  Lake George, nicknamed the Queen of American Lakes, is famed for the transparency of its water and a new report on the health of the lake reveals that it is doing rather well.

According to the report, although concentrations of chemicals and pollutants like salt and nutrients have increased in the deep waters of Lake George, they are still too low to harm the ecosystem at those depths.

The Offshore Chemistry Program studies the lake as part of a collaboration between RPI, IBM Research, and the FUND for Lake George that is called the Jefferson Project.  This long-term commitment provides a wealth of information over time matched by few lake studies in the world.

The recent results show that levels of salt, the nutrient orthophosphate, and chlorophyll have increased substantially over time, but none are yet at a level that will cause harm.

Orthophosphate occurs naturally, but most likely the higher levels are due to improperly functioning septic systems, failing wastewater treatment systems, and stormwater runoff.  The orthophosphate most likely triggered the increase in chlorophyll, which probably is associated with increased density of chlorophyll in individual algal cells, rather than an increase in total algal mass in the lake.

Overall, the results demonstrate the continuing resilience of Lake George to a growing array of stressors.  In nearly 40 years of human activities, the lake has changed in a number of ways, but the changes have so far been relatively small.  With such careful monitoring, we can hope to keep them that way.

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Four Decades of Data Sounds Early Warning on Lake George

Photo, posted September 24, 2009, courtesy of GPA Photo Archive via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Saildrones For Science

July 11, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/07/EW-07-11-18-Saildrones-for-Science.mp3

Nine years ago, engineer Richard Jenkins broke the world land speed record for a wind-powered vehicle with a sailboat on wheels driving across a dry lakebed at 126 miles per hour.  After years of engineering development, his technology has now taken on the form of a saildrone that can autonomously sail the sea gathering ecologic, oceanic and atmospheric data.

[Read more…] about Saildrones For Science

Listening To Volcanoes

April 2, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/04/EW-04-02-18-Listening-to-Volcanoes.mp3

Volcanoes are complicated, and we don’t have universally applicable ways to predict when they might erupt.  Measurements of seismicity, gas emissions and ground deformation are all useful in trying to figure out what volcanoes are up to.  However, it is unlikely that will ever have definitive prediction techniques.

[Read more…] about Listening To Volcanoes

Learning From Fire

December 28, 2017 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2017/12/EW-12-28-17-Learning-from-Fire-1.mp3

The Tubbs Fire was the huge wildfire that burned parts of Napa, Sonoma and Lake counties in Northern California in October.  Between that fire and several smaller ones going on at the same time, at least 43 people died and over 8,400 homes and buildings were destroyed.  The Tubbs Fire alone burned over 36,000 acres. The even larger December wildfires in Southern California scorched hundreds of thousands of acres in multiple counties.

[Read more…] about Learning From Fire

The Largest Floating Solar Power Plant

July 17, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2017/07/EW-07-17-17-The-Largest-Floating-Solar-Power-Plant.mp3

The world’s largest floating solar power plant is now operational and connected to the electric grid in China.   It is a 40-megawatt facility and floats in water 13 to 30 feet deep in a lake that was created by a former mining operation.

[Read more…] about The Largest Floating Solar Power Plant

DNA Analysis of River Water

April 17, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2017/04/EW-04-17-17-DNA-Analysis-of-River-Water.mp3

DNA analysis has become commonplace and inexpensive.  Millions of people have their DNA tested to learn about their origins and family connections.  And the technology has spread to biological research in the form of Environmental DNA or eDNA, which is such a powerful tool that it is transforming the field of wildlife biology.

[Read more…] about DNA Analysis of River Water

Saving Saharan Oases

February 6, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2017/02/EW-02-06-17-Saving-Saharan-Oases.mp3

An oasis is an isolated area of vegetation in a desert, typically surrounding a spring or similar water source such as a pond or a small lake.  Oases can provide habitat for animals as well as people.   Oases have long been essential for trade and transportation routes in desert areas; caravans typically travel via oases so that supplies of water and food can be replenished.

[Read more…] about Saving Saharan Oases

Lake Baikal

January 4, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2016/12/EW-01-04-17-Lake-Baikal.mp3

Lake Baikal is an ancient and massive body of freshwater found in the mountainous Russian region of Siberia.  Deep and voluminous, Lake Baikal holds 20% of the planet’s unfrozen freshwater.  And it’s often been described as the world’s cleanest and most pristine lake. 

[Read more…] about Lake Baikal

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