New research reveals how increasing brain stiffness as we age causes brain stem cell dysfunction, and demonstrates new ways to reverse older stem cells to a younger, healthier state.
It’s a cosmic collision that has astronomers rethinking one of the universe’s most colossal events: the collision of massive stars.
In a new paper published in the journal Monthly Notices of the Royal Astronomical Society, astronomers reveal the finding of a kilonova produced by the collision of two massive stellar objects called neutron stars. The collision is roughly 1,000 times brighter than the death of a massive star called a supernova. And they say it produced several hundred planets’ worth of gold and platinum.
But astronomers almost missed it.
NASA’s Parker Solar Probe mission to better understand the sun makes its third close pass by its target on Sept. 1, 2019.
The astronaut training billionaire Richard Branson to be the first passenger on Virgin Galactic has seen the Earth from 56 miles away. Now, the long-time bitcoin advocate wants to share what she saw: how blockchain and other technologies are enabling a borderless world.
The SLLIM is a liquid sodium nuclear fast reactor that generates 10 to 100 MW for many years, even decades, without refueling. It can’t meltdown, can operate without water, is factory fabricated and shipped to the construction site where it is installed below ground in a seismic-resistant cocoon.
Ukrainian optical company Ochis Coffee is introducing two stylish new sunglasses this year, both made from coffee grounds. Find out more about this eyewear.
Hurricane Dorian is now a “catastrophic Category 5” storm and the strongest on modern record as it approaches the northwestern Bahamas in the Caribbean, according to a National Hurricane Center update today (Sept. 1).
As of 11 a.m. EDT (1300 GMT), Dorian has maximum wind speeds of 180 mph (285 km/h) as the storm churns about 20 miles (30 km) east of Great Abaco Island, the NHC wrote in the update. The storm is about 205 miles (330 km) east of West Palm Beach, Florida.
“Devastating hurricane conditions are expected in the Abacos Islands very soon and these conditions will spread across Grand Bahama Island later today,” NASA officials said today in a morning update.
Several images labelled as “Candidate Landing Site for SpaceX Starship in Arcadia Region” were found in the latest data release from University of Arizona.
Humans today are mosaics, our genomes rich tapestries of interwoven ancestries. With every fossil discovered, with every DNA analysis performed, the story gets more complex: We, the sole survivors of the genus Homo, harbor genetic fragments from other closely related but long-extinct lineages. Modern humans are the products of a sprawling history of shifts and dispersals, separations and reunions—a history characterized by far more diversity, movement and mixture than seemed imaginable a mere decade ago.
Original story reprinted with permission from Quanta Magazine, an editorially independent publication of the Simons Foundation whose mission is to enhance public understanding of science by covering research developments and trends in mathematics and the physical and life sciences.
But it’s one thing to say that Neanderthals interbred with the ancestors of modern Europeans, or that the recently discovered Denisovans interbred with some older mystery group, or that they all interbred with each other. It’s another to provide concrete details about when and where those couplings occurred. “We’ve got this picture where these events are happening all over the place,” said Aylwyn Scally, an evolutionary geneticist at the University of Cambridge. “But it’s very hard for us to pin down any particular single event and say, yeah, we’re really confident that that one happened — unless we have ancient DNA.”
