Two decades after a Cold War-era fence came down, red deer in the Czech Republic remain reluctant to cross into Germany — a fact suggesting that some deer are capable of teaching certain behaviors. Pavel Sustr headed the research team on the red deer, and he explains more.
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Scientists reported Thursday they had figured out a way to make primitive human sperm out of skin cells, an advance that could someday help infertile men have children.
"I probably get 200 emails a year from people who are infertile, and very often the heading on the emails is: Can you help me?" says Renee Reijo Pera of Montana State University, who led the research when she was at Stanford University.
Two herdsmen in the country of Georgia have been infected with a brand-new virus, scientists from the Centers for Disease Control and Prevention said Thursday.
The newly identified virus is a second cousin to smallpox. And, like smallpox, it causes painful blisters on the hands and arms. Other symptoms include a fever, swollen lymph nodes and overall weakness, CDC scientists reported at a meeting in Atlanta.
Ron Strang was on patrol in Afghanistan when a primitive land mine exploded.
"When it went off, it came across the front of my body," Strang says. Though he survived the blast, his left leg was never the same. Shrapnel destroyed most of the muscle on his left thigh. He used to run, swim and hike. But even after he recovered, those days of carefree movement were gone.