Orthopedic implants like hips and knee joints last about 10 years, after which patients must undergo surgery to have them replaced. With longer life spans, an aging population and the increasing demand for prosthetics, the hunt is on for more durable faux bones. Now, a new ceramic developed by material scientists in France promises to extend an implant’s life span to 30 years. A research team based at the National Institute for Applied Sciences in Lyon has developed a process that combines alumina and zirconia, two ceramics commonly used to replace the ball part of the femur that sits in the hip socket. The new alumina-zirconia composites boast significantly greater resistance to crack propagation resulting from defects and scratches and can handle twice as much load as either of the two ceramics alone. Before you ring up your doctor, however, note that human tests won’t start until late 2002.
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.
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.