Science

[:es]The popular claim that women in their fertile days prefer men with more masculine faces may not be true. That’s the conclusion of the largest study to analyze how sex hormones influence women’s preference for men’s faces.[:]

[:es]3D printing has taken the world by storm, but it currently works best with plastic and porous steel—materials too weak for hard-core applications. Now, researchers have come up with a way to 3D print tough and flexible stainless steel, an advance that could lead to faster and cheaper ways to make everything from rocket engines…

[:es]When it comes to measuring how round the electron is, physicists hate uncertainty. Much depends on the most precise measurement possible, including a potential answer to a major scientific puzzle: why the universe contains any matter at all.[:]

[:es]When Neandertals mated with modern humans, they shared more than an intimate moment and their own DNA. They also gave back thousands of ancient African gene variants that Eurasians had lost when their ancestors swept out of Africa in small bands, perhaps 60,000 to 80,000 years ago. Restored to their lineage, this diversity may have…

[:es]Next month, a lavish museum will open its doors in Washington D.C., just a stone’s throw from the Smithsonian castle and the U.S. Capitol. Flanking its doors are 12-meter-tall bronze panels inscribed with Hebrew text from the Book of Genesis recounting God’s creation of the universe[:]

[:es]This summer’s total solar eclipse revealed rare views of the sun’s corona, its outermost layers of plasma millions of degrees in temperature. But the solar corona has long baffled scientists: Why is it so searingly hot compared with the sun’s visible surface, which is about 1000 times cooler?[:]

[:es]They are about as far apart as two things in science can be: a type of ocean wave that helps drive the El Niño climate cycle, and quantum materials that, thanks to a particularly strange bit of physics, have insulating interiors and conduct current along their surface. Yet, in a remarkable case of lateral thinking,…

[:es]Studying the human mind is tough. You can ask people how they think, but they often don’t know. You can scan their brains, but the tools are blunt. You can damage their brains and watch what happens, but they don’t take kindly to that. So even a task as supposedly simple as the first step…

[:es]About 300,000 years ago, herds of rhino-sized creatures migrated across the floodplains of east-central Australia, mimicking the treks that zebras and antelopes make across Africa’s Serengeti today. But these migrants weren’t majestic, long-limbed grazers. Instead they were car-sized relatives of today’s short and stocky wombat. Evoked by a new analysis of a fossil tooth of…