Science

Art Caplan on living longer
In a speech at the Chautauqua Institution this summer, Art Caplan, one of the country's leading bioethicists tried to answer the question: "Is it immoral to want to live longer, be smarter and look better?"
The war on insects
An Aspen Ideas Festival speech by James McWilliams, author of "American Pests: Our Futile Attempt to Conquer the Insect Empire from Colonial Times to the Death of DDT."
The pet doctor is in
Veterinarian Kate An Hunter answers listener questions about all things animal.
The end of an era at the Minneapolis Grain Exchange
After more than a century of shouts and gestures, the trading floor at the Minneapolis Grain Exchange goes silent Friday afternoon. Friday is the last day of open outcry futures trading on the floor of the exchange.
More Aurora Borealis predicted
Northern lights may be returning to most of Minnesota's skies in the coming years. That's because the sun is expected to be creating more weather in space, throwing off clouds of magnetized particles that have the power to turn dark skies into ribbons of color...and disrupt the GPS systems we've come to rely upon.