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Clean Power Plan Court Hearing Delayed to September

Just weeks before the U.S. Court of Appeals for the D.C. Circuit was scheduled to hear challenges to the U.S. Environmental Protection Agency’s (EPA) Clean Power Plan, a rule intended to limit greenhouse gas emissions from the existing fleet of fossil fuel-fired power plants, the court announced it will push the hearing back four monthsand…

Study Links Vanishing of Solomon Islands to Anthropogenic Climate Change

A study published in the journal Environmental Research Letters finds that five of the uninhabitated Solomon Islands have submerged underwater and six more have experienced dramatic shoreline reductions due to man-made climate change. The study by a team of Australian researchers offers scientific evidence confirming anecdotal accounts of climate change impacts on Pacific islands. That evidence…

Studies Make Predictions about Climate Change Impacts

Limiting global average temperature increase to “well below” 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit that increase to 1.5 degrees Celsius—as agreed at the United Nations Climate Change Conference in Paris last year—will do little to stop portions of the world from becoming uninhabitable. That’s according to a new study…

Study: Half a Degree Matters

Last week more than 150 nations signed the Paris Agreement, pledging to hold the increase in the global average temperature to well below 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5 degrees Celsius. Now, the first comprehensive analysis of the impacts of that half centigrade difference…

A Pacific salmon hub is under threat

The Skeena River snakes out of fir-lined fjords on the misty northern coast of British Columbia, and washes over a thousand-acre sandbar. Flora Bank is a biological bottleneck over which millions of finger-length young salmon enter the sea each spring. Scientist Allen Gottesfeld calls Flora Bank the “Grand Central Station” for the watershed. All streams…

Nations to Sign Paris Climate Agreement Friday

Four months after it was finalized by delegates to the Paris Climate Change Conference, the Paris Agreement will be signed by more than 100 nations on Friday. While the agreement is facially insufficient to meet its overall emissions objectives, the signing of the Paris agreement nevertheless is significant. It brings into effect the approach and…

Climate-Change-Related Precipitation Extremes Hard to Predict

Scientists have warned that severe drought and precipitation are among the risks of greenhouse-gas-induced climate change, but a study published in the journal Nature finds that extremely warm temperatures do not always translate into record wet and dry extremes. Highlighting the complexities in predicting the effects of planetary warming on precipitation, lead author Fredrik Ljungqvist…

Record Low Arctic Sea Ice Extent Points to Irreversible Changes

Scientists at the National Snow and Ice Data Center (NSIDC) said on Monday that Arctic sea ice cover of 5.607 million square miles on March 24 represented the lowest winter maximum since records began in 1979. That’s 5,000 square miles less than last year’s record low. Contributing to the ice extent loss were record high…

February’s Record Heat Astounds Scientists

Data released last week by the National Oceanic and Atmospheric Administration (NOAA) shows that the string of monthly global heat records extended through February, when the average worldwide temperature was 2.18 degrees Fahrenheit above the 20th century average. The tenth straight record breaking month, February was the most above-normal month since meteorologists began tracking temperatures in…

U.S., Canada Announce Methane Reduction Plan

In a move that could help the United States and Canada meet pledges they made at last year’s United Nations Climate Change Conference in Paris, President Barack Obama and Canadian Prime Minister Justin Trudeau announced a plan to cut oil and gas industry methane emissions 40–45 percent, compared to 2012 levels, by 2025. In Canada,…

Supreme Court Denies Request to Block EPA’s Mercury Rule

Supreme Court Chief Justice John G. Roberts Jr. denied a request for a stay or injunction of the U.S. Environmental Protection Agency’s Mercury and Air Toxic Standards (MATS) rule—a rule that 20 states have claimed is “unlawful and beyond EPA’s statutory authority.” The ruling means MATS, which requires coal-burning power plants to install technologies to…

Study, EPA Spotlight Methane Emissions from Oil and Gas Industry

Last week, the U.S. Environmental Protection Agency (EPA) released an updated draft of its Greenhouse Gas Inventory, finding that total U.S. greenhouse gas emissions in 2014 were 6.8 billion metric tons of carbon dioxide equivalent—1 percent higher than in 2013, but 8 percent lower than the 2007 peak. The most revelatory revision: methane emissions figures…

EPA’s Clean Power Plan Faces Uncertainty

It has been more than a week since the U.S. Supreme Court issued a stay of the U.S. Environmental Protection Agency’s (EPA) Clean Power Plan, and states are now beginning to indicate how they will approach the resulting uncertainty the decision brings. Although the stay removes the September deadline to submit compliance plans to the…

Supreme Court Events Leave Fate of Clean Power Plan Uncertain

The outlook for U.S. Environmental Protection Agency’s (EPA) Clean Power Plan, a rule intended to limit greenhouse gas emissions from the existing fleet of fossil fuel-fired power plants, is the subject of debate after two key Supreme Court events last week. First, on Tuesday, the U.S. Supreme Court in a 5–4 decision issued a stay,…

Supreme Court Suspends Clean Power Plan

The U.S. Supreme Court blocked the Clean Power Plan, the U.S. Environmental Protection Agency’s rule limiting greenhouse gas emissions from the existing fleet of fossil fuel-fired power plants on Tuesday. The court, in a 5–4 decision split along party lines, put a stay on enforcement of the Clean Power Plan, which is designed to cut…