Known as subclade K, a new, mutated flu strain that has dominated in Europe and Asia is now rapidly spreading across the US.

For most of his life, Michael Comberiate has preferred to look at the world, as he says, upside down. With his hands on the ground and feet in the air, the retired NASA engineer has kept meticulous records of how many handstands he’s done in his 77 years: more than 105,000.Subscribe to The Post Most newsletter for the most important and interesting stories from The Washington Post. He’s done handstands on mountaintops, pyramids and sheets of ice; in about 250 countries, all 50 U.S. states, plus

By Will Dunham WASHINGTON, Dec 3 (Reuters) - An exponential increase in the number of satellites placed in low-Earth orbit has brought advances in telecommunications including broadband access in