11:44
The Wilderness Act Turns 50
Fifty years ago this week, legislation set aside over nine million acres of official wilderness.
Squishy Circuits
Use two play dough recipes to create “squishy circuits” and explore electricity.
Could You Hit a Baseball Pitched Near the Speed of Light?
An excerpt from the xkcd creator’s new book, “What If?”
17:14
Less Flashy Fossils Offer Paleoclimate Clues
Uncharismatic microfauna, such as insects and mollusks, are giving scientists at La Brea Tar Pits in Los Angeles a glimpse of the city’s cool, humid past.
6:51
Microbes Thrive in Antarctic Lake Buried Beneath Ice
Microbes have made a home in a lake trapped beneath an 800-meter-thick ice sheet in Antarctica.
12:21
Oceans Act As the World’s Thermostat
Global temperatures hit a plateau at the turn of the 21st century. Now researchers say they’ve discovered where that missing heat was hiding: in the oceans.
17:29
Is Healthy Soil the Low-Tech Solution to Climate Change?
In her book “The Soil Will Save Us,” writer Kristin Ohlson concludes that the low-cost, low-tech solution to climate change may be directly underfoot—in healthy soil.
18:06
Sylvia Earle’s ‘Mission Blue’
Oceanographer Sylvia Earle bears witness to troubling changes in our oceans in the documentary “Mission Blue.”
Salad Dressing Science: Emulsion Lab
In this experiment, you will test a few common household ingredients to see which is the most effective emulsifier for making salad dressing – and you can eat your results!
Secrets of the Sauce (and Other Edible Liquids)
Culinary scientist Ali Bouzari weighs in on the four ways to change the thickness of any sauce, soup, or liquid.