Word: asteroidal
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Dates: during 2000-2009
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...Take the iPhone: its form gives no clue as to its function or who made it or where it came from. There are no screws. You can't hack it. It's perfect, but it might as well have been made by aliens and fallen to Earth in an asteroid...
...Dinosaurs] never went into the water in a serious way," he says. "[They] never radiated into the oceans the way mammals did after the asteroid hit." Maybe that's because dinos were simply afraid of what lurked in the waters, waiting for them...
...Read "Maybe an Asteroid Didn't Kill the Dinosaurs...
...planet is in the middle of an extinction crisis, the sixth great wave in its history. But unlike major extinction events of the past - like the Permian-Triassic event 250 million years ago, in which 70% of all terrestrial species were wiped out, probably because of an asteroid impact or a similar natural disaster - this time human beings are the cause. Hard numbers are difficult to find, but many scientists believe Earth's species are going extinct at a rate that is up to 1,000 times higher than before human beings came on the scene. (See how animals...
...Chicxulub asteroid didn't kill the dinosaurs, what did? Paleontologists have advanced all manner of other theories over the years, including the appearance of land bridges that allowed different species to migrate to different continents, bringing with them diseases to which native species hadn't developed immunity. Keller and Addate do not see any reason to stray so far from the prevailing model. Some kind of atmospheric haze might indeed have blocked the sun, making the planet too cold for the dinosaurs - it just didn't have to have come from an asteroid. Rather, they say, the source might have...