Why is Elon Musk spending his time on Twitter, not on the mission to Mars?
Friends and colleagues say his plans may be hard to predict, but they wouldn't bet against him.
Category Archives: Science
Environment targets are job half-done, say charities
Long-awaited targets to protect the environment will fail to fix water pollution, say nature groups.
Twitter blocks users from sharing Mastodon links
The social media giant has also suspended the Twitter account of its new rival.