Science

Climate Cast: Winter arctic sea ice nears all-time low
In this hour-long edition of Climate Cast, we look at arctic sea ice, Alaskan villages facing climate change head on and a boulder field in Uganda that offers ancient clues to our changing planet.
Photos: St. Croix bridge is cast piece by (giant) piece
Starting as steel skeletons, segments of the new bridge over the St. Croix River are being cast at a plant in Cottage Grove. Soon, they'll head downriver to be lifted in place to begin to form the deck of the bridge.
A man's incomplete brain reveals cerebellum's role in thought, emotion
Since his birth 33 years ago, Jonathan Keleher has been living without a cerebellum, a structure which usually contains about half the brain's neurons. But that hasn't kept him from living on his own.