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.
The HIV-1 virus cultivated with human lymphocytes.
Credit C. Goldsmith, P. Feorino, E. L. Palmer, W. R. McManus / CDC Public Health Image Library
<a href="http://carlzimmer.com/bio">Carl Zimmer</a> is the author of 12 books about science, including <em>A Planet of Viruses</em>. He has also appeared on <em>RadioLab </em>and <em>This American Life</em>.
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.
In 1925, people lined up to buy anti-evolution books in Dayton, Tenn., where the "monkey trial" of teacher John T. Scopes took place. Tennessee recently enacted a law encouraging teachers to question accepted science on evolution and other issues.
Credit Topical Press Agency / Getty Images
Scopes (center), a high school science teacher, was put on trial for teaching Darwin's theory of evolution, an act that was illegal. He was convicted and fined $100, but the verdict was overturned on appeal.
Credit Hulton Archive / Getty Images
Roger Cone, chairman of the department of molecular physiology and biophysics at Vanderbilt University in Nashville, Tenn., says he thinks scientists "have a responsibility to be in the public sphere."
Credit Courtesy of Vanderbilt University
Tennessee state Rep. Bill Dunn, a Republican from Knoxville, says the legislation he co-sponsored does nothing to threaten the teaching of evolution or other science subjects.