Wed, Aug 27, 2014 at 9:18 AM
The last passenger pigeon died Sept. 1, 1914, making this Sept. 1 the 100th anniversary of the species' extinction.
Fri, Jul 11, 2014 at 11:02 AM
While doctors are disappointed to find traces of HIV in the nearly 4-year-old child, that she remained HIV-free for two years is an encouraging sign for the experimental treatment.
Thu, Jul 03, 2014 at 11:18 AM
Keep these four surprising facts in mind anytime you're near a beach with breaking waves.
Mon, Apr 14, 2014 at 8:00 AM
These adorable baby animals are more than simply cute; they're living symbols designated by state governments to honor regional natural history.
Fri, Sep 20, 2013 at 9:37 AM
Rising temperatures have contributed to a longer life-span for ragweed, a common allergen.
Tue, Sep 03, 2013 at 1:15 PM
Endangered sea turtles are rebounding 'dramatically' along the Southeastern U.S. coast, federal officials say, but they're still at risk from pollution and climate change.
Tue, Sep 03, 2013 at 9:23 AM
Video: The huge alligator was caught on Sept. 1 in Mississippi's Claiborne County and was confirmed to the largest one ever caught in the state.
Fri, Jul 26, 2013 at 10:54 AM
The energy-services giant will plead guilty to destroying evidence after the 2010 Deepwater Horizon oil spill, according to the U.S. Justice Department.
Mon, Jun 17, 2013 at 10:53 AM
But environmental groups say oil is still coming ashore and more work needs to be done.
Fri, Apr 19, 2013 at 12:00 PM
Americans are experiencing one of the worst allergy seasons in years. Here are the 12 worst cities out of 100 ranked by the United States for allergy sufferers.