Science commentator Laurie Winkless joins Kathryn to talk about Danish research that suggests a key system of ocean currents could collapse in the next 25 years. Researchers from Washington State University have found a way to remove 90 percent of the methane that can be pumped into the atmosphere when you start up your car engine and excavations at a site in the Mekong Delta in southern Vietnam have found remnants of spices on ancient cookware that suggest the area was a rich cultural crossroads 2000 years ago.
Laurie Winkless is a physicist and science writer.