Dr. David Montgomery is a Professor of Geomorphology at the University of Washington. He works to bring the impact of geological processes on human history to a wider audience. Montgomery joins Steve Kraske to explain why dirt is the foundation of civilizations, how we're losing it to erosion, and the lessons geology teaches us.
The tiny ostracod is almost eaten by the much larger fish, but the cardinal fish spits the ostracod out once the ostracod begins to emit light. Exactly why this causes the cardinal fish to spit the ostracods isn't known, but there are theories.
They've been called fish fireworks, and their glowing displays are like nighttime light shows on the water. Ostracods are a very old species of crustacean with a trait called bioluminescence. That's a fancy way of saying they light up, like fireflies. But unlike fireflies, ostracods have extracellular bioluminescence. They shoot light out of their bodies and into the water. The behavior is part mating ritual, part defense mechanism.
For Bill Brown, the “father” of high altitude ballooning, it all started when he saw a documentary of a man who parachuted from 100,000 feet above ground.
“The description he gave of being able to see for hundreds of miles in all directions and see the blackness of space and the curve of the earth … I wanted to see that for myself,” he said. “Some people strapped a bunch of balloons to a lawn chair, but that seemed a little risky, so I decided to come up with a camera and a small video camera to put up in a small weather balloon.”
This weekend, 'near space explorers' will be gathering in Hutchinson, Kan. for the annual Great Plains Super Launch. They are hobbyists who launch weather balloons and track their progress using GPS or HAM radio.
On Thursday's Central Standard, we talk with participant John Flaig who uses these balloons to take dramatic photographs from the upper reaches of the atmosphere.
We’re supposed to spend a third of our day sleeping, but often we fall short. And at times when we are lucky enough to sleep, it can be filled with thrilling or tormenting dreams. On today's Central Standard we look at sleep and dreams. We explore how to get to sleep, stay asleep and what your dreams can be saying about your emotional state.
If some people are worried about pictures from freshman year surfacing on the internet, imagine this: a 290 million year old organism gets put on a publicly accessible database, from its specific location all the way to a picture from its deathbed.
Matt Tocheri knows hobbits pretty well: he’s been studying their wristbones for years.
Well, not quite hobbits, per se, but homo floresiensis, a hominid fossil discovered on the island of Flores in Indonesia, which at first glance appeared to be a small version of a modern human. However, researchers argue that these ‘hobbits’ are in fact h. floresiensis, and make up a new branch of the human evolutionary tree.
Originally published on Tue April 17, 2012 2:42 pm
If you've ever had a bacterial infection like staph or strep throat, your doctor may have prescribed penicillin. But if you've had the flu or a common cold virus, penicillin won't work. That's because antibacterials only kill bacteria, and both the flu and the common cold are viruses. So for illnesses like the flu, doctors prescribe antiviral drugs, which target the mechanisms that viruses use to reproduce.