Word: whats
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Dates: during 2000-2009
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Writing in a paper published Wednesday in Nature, scientists describe what they call the velocity of climate change, or more specifically, the speed of Earth's shifting climatic zones. As global temperature rises over the next century, the scientists argue, Earth's habitable climatic zones will start moving too, generally...
Indeed, because global temperature is rising now, ecosystems are already on the move. "Once you explain it to people, it makes intuitive sense," says co-author David Ackerly, a University of California, Berkeley, biologist. "We know what it's like to drive north to escape the heat. It's concrete...
Nevertheless, while the climate-velocity concept is still crude, it's promising enough that Ackerly is collaborating with an organization called the Bay Area Open Space Council on habitat conservation strategies in central California. The new research informs one of the key challenges conservationists face: having only limited funds to...
Zachory K. Berta, a graduate student at the Harvard-Smithsonian Center for Astrophysics who first spotted the hint of the planet among the data, said that the telescopes used in the project are "no more advanced than what a sophisticated amateur would have."
Obama's family visit, like last year's, does not include any scheduled public appearances. Instead, the public will have to rely on the kind of chance encounters that made Obama as much a neighbor as a celebrity: taking in the Honolulu Zoo with his children, walking on the beach...