Air and Water
Climate Change And A Divided Country
This Saturday is Earth Day and it’s also the occasion for the March for Science taking place in Washington, DC and in many other cities around the world. The purpose is to express support for scientific research and evidence-based policies in a tumultuous political environment.
Pesticides And Food Insecurity
A newly released report by the United Nations takes a strong stance against the use of industrial agrochemicals, saying that they are not necessary for feeding the world. The continued use of pesticides at the rate the world currently does in fact can have very detrimental consequences.
DNA Analysis of River Water
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.
The Threat Of Man-Made Earthquakes
According to a new report from the U.S. Geological Survey, millions of people living in Oklahoma and parts of Kansas face significant potential for damaging earthquakes this year as a result of human activity. The only other part of the continental United States facing a similar danger is California, which has natural faults lines slicing through the state.
Cleaning Britain’s Air
According to a new study by the non-profit group Carbon Brief, carbon dioxide emissions in the United Kingdom are at their lowest levels since the 1920s. Four factors are responsible: a record drop in coal use, the rapid growth of renewable energy, the expansion of energy efficiency programs, and the increased use of natural gas for electricity power plants.
Baltimore’s Trash Wheels
Baltimore’s harbor is cleaner than it has been in decades thanks to the efforts of two solar- and hydro-powered trash interceptors built to look like googly-eyed cartoon characters. In fact, they are known as Mr. Trash Wheel and Professor Trash Wheel.
Arguing Against Climate Change
Most of the world has accepted the analysis of the overwhelming majority of climate scientists that shows that our planet is warming and that our actions are the primary cause. However, some people – notably a number holding high office – reject this analysis. What exactly does it imply to say that climate change is not happening or is not caused by us?
Islands Ditching Diesel
Islands around the world have a difficult time developing the infrastructure for electricity generation. Many are simply too small or too poor for conventional power plants. The most common electricity source on islands is diesel generators which are not environmentally friendly and result in some of the most expensive electricity in the world.
Ocean Oxygen Levels
When we think of global climate change, what comes to mind? Rising seas? Melting glaciers? Shrinking sea ice? How about diminishing ocean oxygen levels?
Volcano Power
Geothermal energy uses the heat trapped beneath the Earth’s surface to generate electricity. Typically, geothermal energy plants tap into the steam from natural sources such as geysers, or they draw water from hot, high-pressure underground sources. The hot vapors are then used to drive electric turbines.
Wind Surpasses Water
For many decades, hydroelectric dams were the top source of renewable energy in the United States. But for the first time ever, by the end of last year, installed wind power capacity in the U.S. outpaced hydroelectric capacity.
Coal Plants And Fish
High levels of an element found in coal ash have been detected in fish in two lakes where Duke Energy coal-fired power plants are located, according to a peer-reviewed study at Duke University. The element, selenium, occurs naturally but is concentrated in coal ash.
Coal And Chinese Air
China has worked to reduce its coal consumption in recent years but the air quality in cities like Beijing is still notoriously poor and a major health hazard.
The Largest Battery Storage Substation
At the end of last year, Southern California Edison turned on the largest lithium-ion battery storage facility in the world in Ontario, California. It is a substation with 80 megawatt-hours of capacity, enough energy to power 2,500 households or charge 1,000 Tesla cars a day.
A Better Way To Farm Algae
Microalgae biofuels may provide a viable alternative to fossil fuels. Algae efficiently use CO2 and can produce biomass very quickly. Some species can double their mass in as little as 6 hours. Such single-celled organisms are amenable to high-throughput techniques to evolve new strains, unlike terrestrial biomass sources like corn which can take years to modify.
Wind-Powered Trains
The Netherlands – the country long associated with picturesque windmills – is now operating 100% of its electric trains with wind energy.
Positive Environmental News
From melting Arctic ice to dying coral reefs to rising sea levels, there was no shortage of grim environmental news in 2016. But the news wasn’t all bad. There were several bright spots for the environment last year as well.
Reduced Emissions From Electricity Generation
A recent report from the Energy Information Administration notes that for the first time in 40 years, carbon dioxide emissions from electricity generation are less than those from transportation. The reason is that power plants nationwide are abandoning the use of coal and turning to cleaner burning natural gas, as well as newer sources such as solar and wind power.
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