Even when the weather blows them off course, tagging has shown that many butterflies can get back on track and keep heading south. After migrating, they overwinter in cool, moist places, resting to ...

Using gold flakes, salt water, and light, scientists have made the universe’s invisible binding forces visible in color. The ...

A mathematical trick speeds up seismic calculations for earthquake simulations and could revolutionize earthquake preparedness.

Why the EPA’s air pollution rule change could make the air dirtier, how cancer survival hit a record-high, and what we know about the first-ever medical evacuation from the International Space Station ...