Alcohol & Bacteria
Why does rubbing alcohol kill bacteria? (Disrupts their cell membranes)
Phone
Dental Light
Shining a blue light on teeth kills the bacteria that cause cavities.
Forgetting Dreams
Why can't we remember all of our dreams? (Happens in the deep parts of the brain, perhaps not meant …
TV Bullies
Children who watch a lot of TV are more likely to become bullies later in life.
Reefs and Sharks
Lack of sharks leads to fewer coral reefs, and superglue based on mussel adhesive.
Bird Migration
How do birds know when to migrate? (They watch day length, and then wind conditions.)
Iron-Deficient Moms
Mothers who had adequate iron levels had better parenting skills.
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.