Science

New discoveries shed light on human evolution
From Lucy's daughter to Neanderthal DNA, new discoveries in the world of paleontology are giving us a better picture of how humans evolved. A rebroadcast of Kerri Miller's interview with Donald Johanson, one of the leading experts in the field.
The science of human interaction
What makes us want to smile when we see others smile, or to feel empathy for someone? The author of a new book says it's because our brains are wired to make social connections.
Archaeologists have discovered artifacts in northern Minnesota that may date back as far as 14,000 years. One of the participants in the dig says the findings are significant.
The top 10 medical stories of 2006
This year has had more than its share of health and medical topics in the news. From E.coli outbreaks to polonium poisoning, high-profile strokes to pandemic predictions, many of the medical stories of the past year have approached near-biblical proportion. MPR's Tom Crann consulted Dr. Jon Hallberg for his pick of the top 10.
Trash trouble: After e-recycling law, more illegal dumping
Nearly six months after Minnesota barred old televisions and computer monitors from landfills, leaders in some counties are finding the waste in rivers, ditches, wooded areas and trash bins.
Spreading the word about manure
More farmers are using manure to beat the high cost of commercial fertilizer. The practice brings with it environmental issues.
Among the lions
Lion behavior expert Craig Packer talks about his latest research into why large predators are attacking humans more frequently.