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February 7, 2025
Some research shows that e-cigarettes can be a useful tool for quitting cigarettes, but that strategy is hotly contested by scientists. Plus, an investigative journalist outlines how fraud and misconduct have stalled the search for effective Alzheimer’s treatments in a new book. And, why snow has that crisp, clean smell.
34:35
Bad Diagnosis for New Psychiatry “Bible”
Many experts say the DSM’s approach to mental illness is outdated, and it’s time to move on.
8:40
With Chemical Tweaks, Cement Becomes a Semiconductor
Researchers explain how a cement can take on some of the properties of a metal.
6:51
‘Crazy Ants’ Spreading in the Southeastern U.S.
Tawny crazy ants, recent arrivals to the country, are able to drive out even the imported fire ant.
27:28
Reinventing Farming for a Changing Climate
Climate change may increase pests and turn dry soil to dust. Farmers are already on the offensive.
12:19
Studies Question Potential Alzheimer’s Treatment
A skin cancer drug shown to lessen Alzheimer’s symptoms in mice may not work as originally claimed.
7:48
Tracking Killer Tornadoes
The massive tornado that struck Oklahoma this week was the product of specific atmospheric conditions—and bad luck.
26:14
Tackling New Tech in the Golden Years
How, and why, have some older people overcome the challenges of learning new technology?
11:54
Having a Dog May Mean Having Extra Microbes
Houses with dogs had more types of bacteria, say researchers who surveyed surfaces in 40 homes.
25:53
When Great Scientists Got It Wrong
In Brilliant Blunders, Mario Livio explores colossal errors by science’s greatest minds.
20:37
Resetting the Theory of Time
Physicist Lee Smolin explains his theory of time, and why the future of physics depends on it.