Watching heads wobble measures pulse.
The best visual illusions of 2010 were announced during for the Sixth Annual Illusion of the Year Contest this week.
Research supports idea that overeating can, in extreme cases, be considered an addiction comparable to drug abuse or gambling.
Ig Nobel Prizes spotlighted scientists whose work walks the fine line between silly and significant.
Even before the first warning was issued, it was too late for the inhabitants of the island American Samoa.
Ecologists debate the merits of "assisted migration," a controversial strategy to preserve biodiversity