The Vestigial Appendix
A listener asks: Does the appendix have a purpose?
Mars Life
An astrobiologist posits that we haven't found life on Mars because we haven't been looking for the …
Solar Roundup
Despite not having been washed for billions of years, nature stays relatively clean. How?
Podcast
Small distractions could be big trouble, the effects of cell phone waves on our health, how nature …
Squirrel v. Spruce
Seeds are the prize in an epic evolutionary struggle.
Cell Phones and Health
A listener asks: What's the effect of wireless devices on our health?
Subliminal Distractions
The most insidious distractions may be the ones we're not aware of.
Rich and Happy Roundup
Your state of mind can help you fight off a cold.
Podcast
Giving blood could be good for you, backpacks are better with bungee cords, taking a census of the …