A native California frog once on the brink of extinction is making an encouraging comeback in Yosemite National Park, raising hopes for amphibians like it worldwide that are dying off at an alarming rate, researchers said ...
A Homeland Security Department official says hackers have targeted the voter registration systems of more than 20 states in recent months.
State researchers are using radio collars to track the movement of 16 female black bears living in or near a state forest in the Florida Panhandle.
Two Philadelphia universities—one specializing in health care and the other in design—have agreed to merge.
The FBI is warning state officials to boost their election security in light of evidence that hackers breached related data systems in two states.
Facebook on Monday dismissed complaints by German officials that it had not been helpful in fighting terrorism and urged authorities to better formulate their requests.
New data on air pollution from fracking wells in Colorado will be a big help in assessing whether the emissions are harmful to human health, state officials say.
A study of the eight main Hawaiian Islands shows that ocean debris regularly accumulates around the archipelago, and that most of it is not linked to the March 2011 earthquake and tsunami in Japan, state officials said Tuesday.
Municipal water in Flint, Michigan, has improved significantly and is safe for bathing and showering, although people should continue filtering the water before drinking it, scientists said Tuesday.
Hunters soon could be chasing grizzly bears across the ridges of the Rocky Mountains, leaving three states to drum up plans to ensure the iconic species won't be snuffed out soon after recovering from threats to their survival.