Nesting Dogs
A listener asks why dogs sometimes turn around in circles before lying down.
Why Is It?
Knuckle Cracking
Cracking your knuckles sets off a tiny “firework explosion” in the joint.
Fast-Aging Fish
Can super fast-paced fish reveal how humans could live longer?
Distinguishing Dinos
A listener asks how paleontologists know which species a dinosaur’s bones belong to.
Trees vs. Climate Change
Are coniferous or deciduous trees best at sucking up CO2?
Dinosaur Watching?
Is your bird feeder a window back to the Cretaceous period?
Blowing Away Germs
A listener asks if opening all the windows will spread cold and flu germs around.
Space Elevator
Could a “space elevator” carry supplies to the International Space Station?
Wind Temperature
Moving air feels colder than still air, but what does the thermometer say?
Cooking Spray
How can companies claim that cooking sprays are “fat-free” if the first ingredient is oil?