It’s one of the biggest puzzles of paleontology: Why did North America’s large mammals go extinct shortly after the glaciers melted about 15k years ago? New study suggests that hunters get the credit — or blame.
Flu vaccine is made in eggs, but that’s too slow for a major epidemic. How are vaccines made inside animal cells? What other methods can protect us against a fast-changing, deadly virus?
Golfer-doctor finds that treating apnea cuts golf scores; sees new motivator for wearing nighttime masks.
Tar sands - Thursday, October 29th, 2009
Canada’s oil-drenched sands give it the second-largest oil reserves in the world. Using the “tar sands” pollutes air and water, destroys forests and could cause cancer. Should we leave oil sands alone?
MRI scans of older people show major differences between searchers and non-searchers. After seven hours of Internet experience, those differences disappear. Honest? Could changing the brain be this easy?
Ultralight aircraft are guiding crane chicks toward Florida wintering grounds. Dangers remain, but it’s a step ahead for Americas’ largest flying bird, once reduced to 21 animals.
Scientists propose 9 limits on human actions: Wrecking ozone, over-using fertilizer, killing species could block key “ecosystem services.” Are there natural limits to fresh water use and pollution?
How many dead? Research and real-life experience prove that people die when drivers pick up the cellphone. Even worse: texting on the road!
Flax, the basis for linen, was spun and dyed, and lost in the mud. More than 30,000 years later, microscopic flax fibers provide the first cord in archeological history.