A massive impact crater the size of the city of Paris has been discovered under the ice sheet in northern Greenland. Partially hidden under the Hiawatha Glacier, this 31-kilometer (19.3-mile) crater is estimated to be no older than three million years, but the researchers believe that it was formed much more recently, possibly as late as 12,000 years ago, making it the largest impact crater of its kind on Earth.
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Advances in the analysis of ancient DNA have upended the scientific community’s view of how human populations migrated both into and around the North and South American continents, illustrating the rapid and complex movement of humanity into the western hemisphere towards the end of the last ice age. Aside from unraveling more of the mystery of the origins of the Americas’ first inhabitants, the studies also aided in the repatriation of a long-lost ancestor of a Native American tribe in Nevada, and the discovery of an individual with DNA from Australia that lived on the east coast of modern-day Brazil — over 10,000 years ago.
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California is on fire again, with massive wildfires devouring hundreds of thousands of acres in separate regions at both ends of the state. The largest, the Camp Fire, has burned over 100,000 acres in Butte County since it initially started on November 8, killing 26 people and destroying over 6,700 buildings. The Woolsey and Hill Fires in Los Angeles and Ventura counties have consumed nearly 75,000 acres between the two conflagrations, leaving two known dead so far. President Donald J.read more