Slashdot Mirror
Domain: amnh.org
Stories and comments across the archive that link to amnh.org.
Stories · 6
-
13-Year-Old Uses Fibonacci Sequence For Solar Power Breakthrough
An anonymous reader tips news of 7th grader Aidan Dwyer, who used phyllotaxis — the way leaves are arranged on plant stems in nature — as inspiration to arrange an array of solar panels in a way that generates 20-50% more energy than a uniform, flat panel array. Aidan wrote, "I designed and built my own test model, copying the Fibonacci pattern of an oak tree. I studied my results with the compass tool and figured out the branch angles. The pattern was about 137 degrees and the Fibonacci sequence was 2/5. Then I built a model using this pattern from PVC tubing. In place of leaves, I used PV solar panels hooked up in series that produced up to 1/2 volt, so the peak output of the model was 5 volts. The entire design copied the pattern of an oak tree as closely as possible. ... The Fibonacci tree design performed better than the flat-panel model. The tree design made 20% more electricity and collected 2 1/2 more hours of sunlight during the day. But the most interesting results were in December, when the Sun was at its lowest point in the sky. The tree design made 50% more electricity, and the collection time of sunlight was up to 50% longer!"His work earned him a Young Naturalist Award from the American Museum of Natural History and a provisional patent on the design. -
Darwin Evolving Into A Tricky Exhibit
rbochan writes "The new Darwin Exhibit at the American Museum of Natural History has 'failed to find a corporate sponsor in the United States because American companies are anxious not to take sides in the heated debate between scientists and fundamentalist Christians over the theory of evolution' according to articles at The Sydney Morning Herald, The Telegraph, and The Register. The $US3 million needed for the exhibit was met by private charitable donations." -
Darwin Evolving Into A Tricky Exhibit
rbochan writes "The new Darwin Exhibit at the American Museum of Natural History has 'failed to find a corporate sponsor in the United States because American companies are anxious not to take sides in the heated debate between scientists and fundamentalist Christians over the theory of evolution' according to articles at The Sydney Morning Herald, The Telegraph, and The Register. The $US3 million needed for the exhibit was met by private charitable donations." -
Megafauna Extinction Due to Climate
jvchamary writes "Most biologists believe that Earth is currently undergoing its sixth mass extinction. The cause? Human activity, either directly (e.g. the Dodo) or indirectly (e.g. the Amazon rainforests). The disappearance 30,000-45,000 years ago of the Australian megafauna, large animals such as the marsupial lion, is often attributed to hunting by Aboriginal settlers. However, recent research in Proceedings of the National Academy of Sciences suggests that it was more likely a shift in climate, rather than hunting, that caused the over-sized organisms to die-out (via Nature and the BBC)." -
Origins Mini-Series Airs Tonight
SeaDour writes "The much-anticipated NOVA mini-series Origins begins tonight on PBS (check local listings for time). Hosted by Neil de Grasse Tyson, an astrophysicist and director of the Hayden Planetarium in New York City, the ambitious show plans to journey all the way to the Big Bang and back again, "blending astrophysics, geology, chemistry, biology and even paleontology to knit together insights about the structure of the universe, the creation of planets and the foundations of life itself." MSNBC has an interesting write-up on the show that's been four years in the making." -
Linux Reconstructing Tree of Life?
vaderhelmet writes "Wired has a cool story about how the American Museum of Natural History, funded by the National Science Foundation is using Linux to "construct a pattern of relationships that biologists believe links all of Earth's present and past species -- from the smallest microbe to the largest vertebrate that existed during Earth's 4 billion-year history." They're using their very own homemade supercomputer which ranks in at 107 on the Top 500 supercomputers list. Quote from article: "Linux makes it so easy to create a supercomputer.""