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On a hot August afternoon, I finished a call with a client as I opened the door to the room of my 2-year-old daughter, Alice. She’d slept a little longer than usual, and I needed to wake her so we could retrieve my 4-year-old daughter, Grace, from school. I leaned over Alice in her crib, and she was stiff and blue. Bad, bad, very bad ran through my brain. I started CPR, counting two breaths per 30 chest thrusts, and somehow managed to call 911. Eventually, the paramedics arrived. They told me to stand back. I did. Shortly after, I...

People have been disappearing inside US National Parks at an alarming rate, with at least 10 vanishing never to be seen again since 2016, data examined by The Post shows. One was a hiker whose last message was to his son, telling him he was on his way to Yosemite National Park. Another got separated from his group during a nine-day excursion through the stifling Grand Canyon heat. A young river tour guide, with his whole life ahead of him, also vanished during a group trip. “No trace of man missing on Colorado River in Grand Canyon,” reads a local...

A new study has found no trace of the mysterious substance known as dark matter around the sun, adding a twist to current theories, researchers say. Dark matter is one of the greatest cosmic mysteries of our time — an invisible, intangible material thought to make up five-sixths of all matter in the universe. Scientists currently think it is composed of a new type of particle, one that interacts normally with gravity but only very weakly with all the other known forces of the universe. As such, dark matter is detectable only via the gravitational pull it generates. Astronomers first...

WASHINGTON (AFP) – A massive bright reddish star in the Orion constellation has mysteriously shrunk by over 15 percent in the last 15 years and astronomers have not yet determined why, according to a study released Tuesday. Betelgeuse, considered a supergiant star, is so large that it would reach to Jupiter's orbit in our solar system. But at a radius of about five astronomical units, the star has shrunk in size since 1993 by a distance equivalent to Venus's orbit. "To see this change is very striking," University of California, Berkley professor Charles Townes, who whon the 1964 Nobel Prize...