Gray Hair
What causes hair to turn gray? (Toxins build up and kill the pigment cells in the hair follicle.)
West Nile Weather
Hot summers mean a higher risk of West Nile virus epidemics
Bottomless Soup Bowl
People whose bowls kept filling up with more soup ate more, and fans of a winning team are more …
Middle-Aged Eyes
Why do your eyes change over age 40? (Lens becomes less flexible due to aging.)
Gum & Heart Disease
Two kinds of oral bacteria were found in arterial plaque.
Spinning Earth
Why does the Earth spin? (Debris came together to form the Earth was spinning)
Medicinal Produce
Analyzing colored carrots for phytochemicals, and a compound in grapes inhibits a cancer enzyme.
Green Leaves
Why are leaves green? (Chlorophyll doesn't absorb green light, so it reflects back.)
Dirt Diversity
Agricultural methods can keep the diverse organisms in soil healthy.
Camera Red-Eye
Why do flash pictures sometimes give subjects red eyes? (Light reflects off blood-vessel-rich …
Zombie Worm
The zombie worm feeds off the oil in whale bones on the ocean floor.