Word: extinctionism
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HOW ARE AFRICAN ELEPHANTS SIMILAR TO MINKE whales? Neither animal is in immediate danger of extinction, but both are protected by international hunting bans because past efforts to exploit the beasts commercially have driven their populations into precipitous decline. Countries that have well- managed elephant herds, including Zimbabwe, South Africa...
But when did these adventurous souls reach Alaska? What kind of people were they? How fast did they spread down through the Americas? For decades, archaeologists felt sure they knew the answers: the first Americans were skilled hunter-gatherers and toolmakers who arrived about 11,500 years ago and moved...
The reason, he and many colleagues believe, may have been a mass extinction of many of the planet's species late in the Triassic period. It could have been caused by the impact of a massive asteroid or comet, perhaps, or by dramatic climate changes triggered as Pangaea separated to...
EXTINCTION BY COSMIC CATASTROPHE
The leading theory about what wiped out the dinosaurs used to be planetwide climate change; now it's something completely out of this world. Sixty-five million years ago, goes the story, at the very end of the Cretaceous period, an asteroid or comet smashed into the earth, throwing up...