Low oxygen areas are disappearing almost a month earlier than they did 30 years ago.
Researchers find that wildfires are responsible for up to 20 percent of water flowing in some Western U.S. streams.
Scientists identified the key gene that helps certain rice varieties keep their heads above water.
A citizen science initiative reveals new insights about the spread of tick-borne infections.
Artifacts suggest that an extinct human species left Africa about 250,000 years earlier than previously thought.
New research suggests that despite being tired, athletes can still sprint at top speed near the end of a long match.