We asked medical experts for the most impactful things you can do right now to live longer—and stay healthy enough to really enjoy your golden years.

As soon as it gets dark, two bright lights become visible—the brightest in the southwest and an almost-as-bright light in the ...

Ever wonder what the northern lights look like from space? Thanks to NASA astronaut Don Pettit, you can see for yourself.

Shaded plants use green and far-red light for photosynthesis. Findings could transform greenhouse horticulture.

As horrifying as the spread of these fires has been, they are merely the latest in a long and harrowing catalogue, writes.