Today’s materials have limited capacity to withstand heat, forcing aerospace engineers to design spacecraft like the space shuttle with blunt noses and wing edges. Such shapes allow a layer of compressed air to form above the surfaces as the craft reenters the atmosphere-lowering the heat load but also making the craft less aerodynamic. A new ceramic, developed at NASA’s Ames Research Center, might make possible spacecraft with sharper edges and pointed noses that slice through the air on their way to and from orbit. The ceramic withstands temperatures up to 2800 degrees C (today’s shuttle begins to sizzle at 1500 degrees). In a June test, fins made from the material will be attached to the nose of a Minuteman missile.
Geoffrey Hinton tells us why he’s now scared of the tech he helped build
“I have suddenly switched my views on whether these things are going to be more intelligent than us.”
ChatGPT is going to change education, not destroy it
The narrative around cheating students doesn’t tell the whole story. Meet the teachers who think generative AI could actually make learning better.
Meet the people who use Notion to plan their whole lives
The workplace tool’s appeal extends far beyond organizing work projects. Many users find it’s just as useful for managing their free time.
Learning to code isn’t enough
Historically, learn-to-code efforts have provided opportunities for the few, but new efforts are aiming to be inclusive.
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