A new study says that the elephant population in a key Central African sanctuary is diminishing rapidly.
Thousands of residents have returned home since the evacuation order was lifted on Tuesday, while others are waiting to see how the dam handles this week's storms before making the journey.
The daily data from the US National Snow and Ice Data Center (NSIDC) shows that the sea ice extent on Monday shrunk to 883,015 sq miles.
The rusty patch bumble bee had been granted endangered species protections under the Obama administration.
In this edition: Community-size projects aim to democratize solar energy; big-name Republicans push 'carbon dividends' for all; man-made pollinators.
Safety concerns at the Oroville Dam center on engineering and maintenance. But dams also face new challenges in managing water in an era when rains can be heavier, and less precipitation is falling as snow.