Richard Potts of the Smithsonian Museum of Natural History discuss the findings. Brain cells do indeed multiply. Schools debate the teaching of evolution. The beginning of Dolly, a cloned sheep.
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More NewsHour Health and Science coverage. The bones are old, about 3 million years old. They were discovered recently by a team of scientists in a cave near Johannesburg, South Africa. Here to tell us about it and what it means about evolution is Richard Potts, director of the Human Origins program at the Smithsonian Museum of Natural History. Welcome, Mr. Potts.