A chunk of rock that had been buried in the ground for millions of years has become a new clock for understanding Earth's rotation. Analysis of a fossilized Cretaceous-era bivalve shell has revealed that our planet's days were half an hour shorter 70 million years ago.
The Australian privacy regulator filed a lawsuit against Facebook Inc. accusing the social media giant of sharing the personal details of more than 300,000 people with political consultant Cambridge Analytica without their knowledge.
Something in the universe is creating more mass than we can detect directly. We know it's there because of its gravitational effect on the stuff we can detect; but we don't know what it is, or how it got here.