December 8, 2016, 4:36 p.m. by Michael d'Estries
The spacecraft will send itself on a collision course with the planet in 2017.
Why wild giraffes are suffering a 'silent extinction'
December 8, 2016, 10:54 a.m. by Russell McLendon
The iconic animals have declined more than 40 percent in 30 years, potentially facing extinction yet drawing little global attention.
70-mile-long crack develops in Antarctic ice shelf
December 7, 2016, 1:12 p.m. by Mary Jo DiLonardo
The rift is expected to create an iceberg the size of Delaware.
In typical Texas fashion, urban nature park in Dallas would be country's biggest
December 5, 2016, 3:35 p.m. by Matt Hickman
But there's a long way to go before Dallas' 10,000-acre Nature District becomes a reality.
Standing Rock protesters celebrate as pipeline is halted
December 5, 2016, 12:15 p.m. by Mary Jo DiLonardo
Activists relish the victory, but many of them still aren't leaving.
These electric-blue night clouds are expanding around the globe, says NASA
December 5, 2016, 12:05 p.m. by Michael d'Estries
Beautiful phenomenon, relatively new to science, may be growing due to greenhouse gas emissions.
World's highest plants discovered 20,000 feet above sea level
December 2, 2016, 6:46 p.m. by Bryan Nelson
Vascular plants aren't supposed to be able to grow at such high altitudes.