1. Domestic pigs can quickly learn how mirrors work and use them to find food.
2. Grumpy people think more clearly because negative moods trigger more attentive, careful thinking.
3. High cholesterol levels in midlife are associated with an increased risk of Alzheimer's disease.
4. Babies pick up their parents' accents from the womb, and infants are born crying in their native dialect.
5. Surfing the Internet may help delay dementia because it creates stimulation that exercises portions of the brain.
6. The human body emits a glow that is 1,000 times less than what our eyes can detect.
7. Differences in body odors produced by people who are more prone to insect bites show they have lower levels of fruity-smelling compounds.
8. A chemical component in broccoli can protect the lining of arteries from blockage that leads to angina, heart attack and stroke.
9. A close relationship with a caregiver can give Alzheimer's patients an edge in retaining brain function over time.
10. Watermelon is more efficient at rehydrating our bodies than drinking water. It contains 92 percent water and essential rehydration salts.