With funding from ARPA-H, three teams of researchers have regrown bone and cartilage, even entire knees, in animal studies. Human trials are not far off.

From our jokes and slang to the White House’s policy messaging, internet “brain rot” has escaped our phones to take over … well, everything.

A writer reports from inside the premium bubble, where there’s no such thing as too much, petty annoyances are nonexistent and the real world never intrudes.