![An aerial view of a Roman military camp in the Swiss Alps.](https://cdn.mos.cms.futurecdn.net/8GozAVHSNLrbYLjvWxS6KP-200-80.jpg)
'Sensational discovery' of 2,000-year-old Roman military camp found hidden in the Swiss Alps
Researchers used lasers to find the Roman military camp, which was "strategically" located overlooking a battleground.
By Tantse Walter last updated
BUYING GUIDE The best star projectors transform your home into a mesmerizing, other-worldly space — whether you want to sleep under the stars or learn more about astronomy.
By Paul Sutter published
A flowery passage in a 6,000-year-old Hindu text may be the earliest known reference to a solar eclipse, describing the sun as being "pierced" with darkness and gloom and proposing that evil beings had caused the sun's "magic arts to vanish."
By Stephanie Pappas published
Tiny robots much smaller than blood cells could deliver clot-forming drugs where they're needed most, a study in rabbits suggests. The tech has yet to be tested in humans.
By Jennifer Nalewicki published
Why do dogs' paws smell like corn chips? A veterinarian explains the cause of this olfactory offense.
By Ben Biggs last updated
Looking to inspire the next generation of curious minds? These are our picks of the best popular science books for children of all ages.
By Jim Lucas last updated
reference Centrifugal and centripetal are two closely related forces that describe circular motion, but the meanings are often mixed up.
By Margaret Osborne published
Heat triggers a series of complex chemical reactions that change the color, flavor and texture of meat.
By Gavin Stoker last updated
The best binoculars for kids need to be lightweight, compact and easy to hold and use — we've rounded up our favorite models for kids young and old.