credit: Andreas Kay
MOST POPULAR RIGHT NOW
- Physics 101: You think you know what makes a bike stay up? Do you really?
- Talented architect tackles the tiny house and comes up with a mini gem
- Man saves 375 lbs black bear from drowning (with photos and video)
- Electric vehicle wins famed Pikes Peak Hill Climb 2015
- Why are they flooding the Grand Canyon?
- SlingShot: Inventor Dean Kamen's 15-year quest to solve the world’s safe water crisis
- This free app helps you identify the plants and animals around you
- In 35 years America has cut its energy intensity in half, getting exactly nowhere.
- 21st century 'mood ring': a bracelet that senses your toxic exposure
- A small town in Spain fights food waste with a humble refrigerator