‘Is it safe to kayak?’: New Potomac River tests aim to answer that after massive sewage spill

Old NASA science satellite plunges back to Earth

King penguins are the rare species benefiting from a warming world. But that could change

Japan marks 15 years since tsunami disaster as Takaichi pushes more nuclear energy use

Towering lava fountains of Hawaii’s Kilauea volcano trigger park and highway closures

FDA finds little evidence that a drug touted by Trump can help people with autism