"For years, public health experts have warned against eating certain kinds of fish, including tuna, that tend to accumulate mercury. Still, tuna consumption provides more mercury to U.S. consumers than any other source. But recently, as industry cuts down on its mercury emissions, research has found mercury concentrations in some fish are dropping."

"A huge shelter has begun making its way to Chernobyl nuclear reactor No. 4."

"President-elect Donald Trump is just starting to arrange the team that will advise him and implement his policy agenda. But the list of names that have been floated to fill the top job at the Interior Department includes many people who would slash environmental regulations."

"A world greatly concerned about how the election of Donald Trump as the next U.S. president could stall global climate policy received a major dose of welcome news Sunday, when scientists published a projection suggesting that for the third straight year, global carbon dioxide emissions did not increase much in 2016."

"Environmental groups, fresh off rejuvenating victories on the climate front, now face a political world aligned against them."

"The world is set to notch up a new heat record in 2016 after a sizzling 2015 as global warming stokes more floods and rising sea levels, the U.N. weather agency said on Monday at climate change talks overshadowed by Donald Trump's election win."

"U.N. Secretary-General Ban Ki-moon said on Tuesday action on climate change has become 'unstoppable', and he expressed hopes that U.S. President-elect Donald Trump would drop plans to quit a global accord aimed at weaning the world off fossil fuels."

"The Army Corps of Engineers dealt a blow to the progress of the controversial Dakota Access Pipeline on Monday, saying in a letter that more analysis and discussion with the Standing Rock Sioux tribe is needed before construction can take place under the Missouri River."

"Faced with the prospect of his successor unraveling a slew of environmental regulations and withdrawing the country from a historic climate pact, President Obama on Monday made the case that his push to move the United States toward cleaner energy sources had helped boost the economy."