The Atlantic Ocean has been widening for hundreds of millions of years, but its growth may have briefly gone into overdrive ...

At the time, the massive Laurentide Ice Sheet, which stretched over North America as far south as Pennsylvania, started to recede. Melting ice flooded into the oceans, and sea levels worldwide ...

Around 10,000 years ago as the last Ice Age drew to a close, the drifting of the continent of North America, and spreading in the Atlantic Ocean, may have temporarily sped up—with a little help from ...