A crypto entrepreneur says his net worth has fallen from more than $26bn to $100,000 after his company imploded.
Elon Musk's Starlink satellites will be used in a UK government trial aimed at helping remote areas of the country get high-speed internet connections.
The European Union has threatened it could ban Twitter unless Elon Musk abides by its strict content moderation rules.
Doctors have hailed a "new era" of medicine after a study showed for the first time that a drug can slow the debilitating symptoms of Alzheimer's.
Science is a slog. Not a series of "Eureka!" moments.