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5 December 2013 11:26 am ,
Vol. 342 ,
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
Since arriving on the island of Guam in the 1940s, the brown tree snake ( Boiga irregularis ) has extirpated native...
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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ScienceShot: The Largest Bulge in the Solar System
5 May 2010 12:16 pm
Geological features don't usually grow overnight, but the Artemis Corona, an almost perfectly circular bump on Venus the size of Alaska, just got five times bigger. Researchers creating highly detailed new Venusian maps noticed a ring of ridges beyond the originally assumed diameter of Artemis, suggesting that the previously described bulge (inset) was just the tip of a gigantic swelling of land (white circle). The scientists now believe Artemis to be the largest such protuberance in the solar system, with a diameter of 13,000 kilometers, greater than the distance between Los Angeles and Sydney. Given its size and shape, the researchers—who report their findings this month in Geology—suggest that an enormous spout of lava rising from deep inside the planet, called a mantle plume, is the only known process that could have formed Artemis. Similar activity in Earth's mantle produced the 2500-kilometer wide Mongolian-Manchurian steppe.