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The Atlantic Ocean has been widening for hundreds of millions of years, but its growth may have briefly gone into overdrive ...
CHICAGO — As an ice sheet ... end of the last glacial period some 10,000 years ago, it left behind the planet’s largest freshwater system. At least that’s what scientists have long believed about the ...
Around 10,000 years ago, as the last Ice Age drew to a close, the drifting of the continent of North America, and spreading ...
As an ice sheet thousands of feet thick began its final crawling retreat from North America to the Arctic toward the end of the last glacial period some 10,000 years ago, it left behind the planet ...
As an ice sheet thousands of feet thick began its final crawling retreat from North America to the Arctic toward the end of the last glacial period some 10,000 years ago, it left behind the planet ...
CHICAGO — As an ice sheet ... of the Great Lakes. But a recent study suggests that the timeline actually stretches further back — beyond the evolution of early humans and past the age of ...