How can a river flow in the ocean? Underwater rivers saltier than surrounding sea water. That means the water is more dense and sinks to the ocean bottom.
"We did not know the fungus can grow so huge," said Professor Yu-Cheng Dai, who made the discovery. "A small piece of the fruiting body is almost like my size."
Cambridge researchers give evidence of modern humans migrating out of Africa with 10 times the population of Neanderthals in central and western Europe.
Expect 7 billion humans by October 31, according to experts at the Population Reference Bureau, which released its 2011 World Population Data Sheet on July 27.
Curiosity has more than twice the length and and five times the weight of previous Mars rovers. It's scheduled to launch in 2011 and arrive in August 2012.