Evolution is a Fact and a Theory
Copyright © 1993-2002 [Last Update: January 22, 1993] hen non-biologists talk about biological evolution they often confuse two different aspects of the definition.
How Science Turned a Struggling Pro Skier Into an Olympic Medal Contender - Wired Science
Saslong.org/R.Perathoner Steven Nyman is poised at the starting gate, alert, coiled, ready. A signal sounds: three even tones followed by a single, more urgent pitch, sending Nyman kicking onto the Val Gardena downhill ski course. He pushes five times with his poles, accelerating as quickly as possible, stabbing the snow frantically.
The Elements Revealed: An Interactive Periodic Table
In the October 2011 issue of Scientific American, we celebrate the International Year of Chemistry. Learn more about its impact on our daily lives in our Special Report. UPDATED: 06/18/2013 In honor of the 2013 Lindau meeting, which focuses on chemistry, we have updated our interactive periodic table with links to Nature Chemistry's In Your Element essay series.
166 Documentaries To Expand Your Consciousness
By: Higher Perspective Here is a list of over 100 documentaries you can watch for free online. They are about Science, Consciousness, ETs, you name it. It’s a smorgasbord of fascinating subjects to learn about. If you find a dead link please let us know and we will find another to replace it.
Watkins Glen State Park
Watkins Glen State Park is the most famous of the Finger Lakes State Parks located on the edge of the village of Watkins Glen, New York, south of Seneca Lake in Schuyler County. The main feature of the park is the hiking trail that climbs up through the gorge, passing over and under waterfalls. The park has a lower part that is next to the village and an upper part that is open woodland.
Engineered stem cells seek out and kill HIV in living mice
Expanding on previous research providing proof-of-principle that human stem cells can be genetically engineered into HIV-fighting cells, a team of UCLA researchers have now demonstrated that these cells can actually attack HIV-infected cells in a living organism. The study, published April 12 in the journal PLoS Pathogens, demonstrates for the first time that engineering stem cells to form immune cells that target HIV is effective in suppressing the virus in living tissues in an animal model, said lead investigator Scott G. Kitchen, an assistant professor of medicine in the division of hematology and oncology at the David Geffen School of Medicine at UCLA and a member of the UCLA AIDS Institute. "We believe that this study lays the groundwork for the potential use of this type of an approach in combating HIV infection in infected individuals, in hopes of eradicating the virus from the body," he said.
The bacteria that turns water into ice
Meet Pseudomonas syringae, a bacterium that causes disease in plants and helps make snow machines work. It all has to do with ice nucleation — the process that forms ice crystals in the atmosphere and, thus, snow. You probably know that raindrops and snowflakes form around something. There's always a central nucleus that serves as the backbone of the water molecule structure.
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