A Colorado trail runner is attacked by a young mountain lion and kills it with his bare hands.

The last five years have been the hottest in recorded history.

A huge cavity, six miles long and 1,000 feet deep, has formed under Antarctica’s Thwaites Glacier, signaling that the Antarctic ice sheet is melting faster than had previously been realized. In the last three years, the glacier has lost 14 billion tons of ice. 

The world’s oceans are changing color. Variations in the type and distribution of phytoplankton due to changing water temperatures are making blues bluer and greens greener.   

President Donald Trump’s State of the Union address does not include the words “climate change.” 

Senator Ed Markey (D-MA) and Representative Alexandra Ocasio-Cortez (D-NY) unveil a proposal for a sweeping Green New Deal or climate justice. 

The Department of Energy wants to roll back Obama-era efficiency standards for lightbulbs. 

Ninety beluga whales and 12 orcas are being held in a small “whale prison” off the coast of Vladivostok, Russia, possibly for sale to amusement parks in China. 

One of four wolves translocated to Isle Royale National Park in Michigan to bolster its failing wolf population walks back to Minnesota over an ice bridge. Another dies of an unknown cause. 

Sixty-five grizzly bears were killed in the Yellowstone region in 2018, mostly because of human-related causes. 

Customs officials in Hong Kong intercept a record shipment of contraband animal parts: 8.3 tons of pangolin scales and hundreds of ivory elephant tusks. 

Steve Bannon, Kris Kobach, Erik Prince, and other high-profile supporters of President Trump are raising money for a private effort to construct a wall on the US-Mexico border, possibly to be made out of a hemp-based building material called “hempcrete.” 

Thousands of baby flamingos are being airlifted to safety as their breeding ground in South Africa dries up. Rescuers are seeking to comfort the chicks by placing feather dusters in their cages.  

Genetically modified cows in China are claimed to be producing milk that is 80 percent similar to human breast milk.