The ornithomimusdinosaur was built like a 400-pound ostrich and lived about 75 million years ago. But recent research suggests the adult dinos had big, showy, colorful feathers with quills that were most likely used for sexual displays or courtship.
Republican presidential candidate Mitt Romney has accepted the scientific consensus that the planet is warming up. But he has not accepted another element of that consensus: that humans are largely responsible. His position is well-grounded in politics, but not so in logic.
The co-author of a controversial study linking diet soda consumption to blood cancers says his study's findings fall into a gray area — between a clear relationship between diet soda consumption and cancers and no relationship at all. That, he says, is "the natural process of science."
Why do some leaders make little difference to organizations and countries while others turn out to be indispensable? Research suggests that what's key isn't personality or even the historical moment, but the organizational structure that produces the leader.
Growing algae as a source of fuel could consume vast amounts of water and fertilizer, according to a study by the National Academy of Sciences. There's also a risk that the energy required to produce these fuels would make them impractical. These daunting technical problems need to be overcome if the nation wants to turn to algae fuels as a substitute for gasoline.
We drink a lot of diet soda in this country, so when researchers disavowed a study linking aspartame to rare cancers just before publication, we took notice. The whole issue illustrates what makes scientific studies so confusing to the public. We'll keep you posted on this.
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