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Luis (left) and his son Walter Alvarez (right) at the K-Pg Boundary in Gubbio, Italy, 1981. In 1980, a team of researchers led by Nobel prize-winning physicist Luis Alvarez, his son, geologist Walter Alvarez, and chemists Frank Asaro and Helen Vaughn Michel discovered that sedimentary layers found all over the world at the Cretaceous–Paleogene boundary contain a concentration of iridium ...
For his time as president-elect, see the second presidential transition of Donald Trump; for a detailed account of his first months in office, see First 100 days of the second Donald Trump presidency; for a complete itinerary of his travels, see List of presidential trips made by Donald Trump (2025).
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More than 80 illegal migrants nabbed under President Trump’s border crackdown were recently loaded onto a C-17 military plane in El Paso, Texas, for a one-way flight back to Ecuador.
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The schedule changes, which will accommodate rush-hour traffic, are being tried out on a temporary basis Commuters rejoice! The Woods bridge opening schedule is about to get more vehicle-friendly
[30] [145] The open niche space and relative scarcity of predators following the K-Pg extinction allowed for adaptive radiation of various avian groups. Ratites , for example, rapidly diversified in the early Paleogene and are believed to have convergently developed flightlessness at least three to six times, often fulfilling the niche space ...
Hundreds of migrants waited in long lines outside an immigration office in southern Mexico on Monday, hoping to secure safe passage north and enter the U.S. legally before President-elect Donald ...