Podcast Episodes
Back to Search
Early Butchers Used Small Stone Scalpels
Homo erectus used hand axes to butcher elephants and other game. But a new study suggests they also used finer, more sophisticated blades. Christophe…
6 years, 5 months ago
Microplastics in Fresh Water Are Mostly Laundry Lint
Microplastic particles are everywhere, but in freshwater systems, 60 percent of particles are clothing lint from laundry.
6 years, 5 months ago
Kids Are Not Hurt by Screen Time
A study finds no deleterious effects on mental health when kids spend their leisure time texting and engaging in other online activities.
Learn more …
6 years, 5 months ago
Lab-Grown Human Mini Brains Show Brainy Activity
As the little structures grow, their constituents specialize into different types of brain cells, begin to form connections and emit brain waves. The…
6 years, 5 months ago
Eavesdropping Puts Anxious Squirrels at Ease
Squirrels constantly scan their surroundings for hawks, owls and other predators. But they also surveil for threats by eavesdropping on bird chatter.…
6 years, 5 months ago
Earth's Magnetic Field Initiated a Pole Flip Many Millennia before the Switch
Lava flow records and sedimentary and Antarctic ice core data show evidence of planetary magnetic field activity 20,000 years before the beginning of…
6 years, 5 months ago
Humpback Whales Swap Songs at Island Hub
At the Kermadec Islands, humpbacks from all over the South Pacific converge and swap songs. Christopher Intagliata reports.
Learn more about your ad…
6 years, 6 months ago
Food Expiration Dates May Mislead Consumers
Better food labeling could prevent people from throwing away a lot of “expired” food that’s still perfectly edible.
6 years, 6 months ago
Farmland Is Also Optimal for Solar Power
The conditions of sunlight, temperature, humidity and wind that make cropland good for agriculture also maximize solar panel efficiency.
6 years, 6 months ago
Chemical Tweak Recycles Polyurethane into Glue
It’s not easy to recycle polyurethane, so it’s usually tossed out or burned. But a chemical tweak can turn polyurethane into glue. Christine Herman r…
6 years, 6 months ago