More than 60 ships are being dispatched to ward off a green tide approaching the city of Qingdao, the Guardian reports. Officials in the Chinese coastal city hope an armada can save them from a looming onslaught of green algae.
What would happen if the Earth stopped spinning? We don't have any reason to think it will in the next few million millennia, but Witold Fraczek, an employee of geographic imaging software company ESRI, was curious. He used ArcGIS, the company's flagship software, to build a virtual model of the planet in the absence of centrifugal force.
David Keith believes strong-arm strategies could soon be our last resort for reversing record levels of carbon in the atmosphere
By John Bradley Posted 07.02.2010 at 10:00 am 22 Comments
In the 1992 film Unforgiven, Clint Eastwood spends most of the movie slowly and methodically avoiding violent confrontation with the bad guys before finally turning things around with a bloody burst of gunslinging. That’s something like the approach of Canadian physicist and environmental scientist David Keith. Except that his villain is climate change, and while he’s still doing everything he can to avoid a fight, Keith is also stockpiling ammo.
If you're reading PopSci, you probably already know all about the latest efforts to offset carbon dioxide emissions, engineer clean building materials and combat pollution from traditional energy sources like coal and oil.
But you may be less aware of the more insidious climate villains--the quieter ones, which aren't necessarily belching toxic gases or currently destroying the Gulf of Mexico. Their damage is more indirect, but that doesn't make it less harmful.
In 1997, Jeanne Louise Calment of France died at the age of 122, making her the oldest documented human to have ever lived. People who live to be 100 years or older are rare, and only about 1 in 600,000 people in industrialized nations live that long. But is there something genetically unique about centenarians that enables them to age gracefully and relatively disease-free? According to the results of a long-term study at Boston University School of Medicine, the answer is yes.
Scientists unveiled fossils from West Africa Thursday that turn paleontology on its head -- they push the origin of multicellular life back by 1.5 billion years.
The fossils are 2.1 billion years old, the scientists say, fully three times older than previous estimates of when complex life evolved. The fossils were reported in the British journal Nature.
The world of quantum mechanics gives us some pretty weird things -- such as matter that exists in all possible places at once, and strange states of matter like supersolids, a phenomenon in which a solid essentially acts like a liquid.
As scientists decode more and more genomes, the tree of life gets pretty complicated. It makes tough work for geneticists or other researchers who want to understand which organisms share which genes -- there are just so many comparisons. So there's a growing need for a better, easily searchable bioinformatics database.
A Chinese computer scientist has a suggestion: mimic the way search engines index Chinese characters.