From Stem Cells to Eggs (and Beyond)
Stem cells can be turned into heart, liver, and brain cells—but what about a whole new organism? A study in Science explains the transformation from stem cell to egg to mouse pup.
Can Government Bans Tackle Obesity?
Experts debate whether government regulations are an effective way to fight the obesity epidemic.
What the Doctor Ordered: Building New Body Parts
Spray-on skin, made-to-order muscle, and print-out kidneys aren’t just science fiction anymore.
Microbes Benefit More Than Just the Gut
Sinuses, too, are healthier when populated by a diverse colony of bugs.
Seeing Through the Smoke—The Secrets in a Cigarette
Many cigarettes are only two-thirds tobacco, and contain hundreds of additives, such as antifreeze, cocoa shells, and liquorice.
Study May Link Pro Football, Brain Decline
A new study suggests that pro football players are more likely to develop neurodegenerative diseases.
Tracking Viruses from Animals to People
Researchers discuss West Nile, hantavirus, and other diseases that cross from animals to people.
David Eagleman Gets Inside Our Heads
Neuroscientist David Eagleman exposes our unconscious minds in his latest book Incognito.
Some Docs Doubt Blood Type, Heart Disease Link
A study links type O blood with a lower risk of heart disease—but not all docs agree.
Solar Toilet Disinfects Waste, Makes Hydrogen Fuel
Caltech’s solar toilet took top prize in the Reinvent the Toilet Challenge.