科学与环境
Early humans in America endured climate chaos—new research
来源: Phys.org - latest science and technology news stories · 发布于
Some 23,000 years ago, during the coldest part of the last ice age, people walked across the muddy margins of an ancient lake in what is now White Sands National Park, New Mexico.
Some 23,000 years ago, during the coldest part of the last ice age, people walked across the muddy margins of an ancient lake in what is now White Sands National Park, New Mexico.
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