Time travel is deterministic and locally free, a paper says—resolving an age-old paradox. This follows research observing that the present is not changed by a time-traveling qubit. It’s still not very ...

Alana Benson is an investing writer who joined NerdWallet in 2019. She covers a wide variety of investing topics including stocks, socially responsible investing, cryptocurrency, mutual funds, HSAs ...

Chris Davis is a Managing Editor on the Investing team. As a writer, he covered the stock market, investing strategies and investment accounts, and as a spokesperson, he appeared on NBC Bay Area and ...

The elite team of Karate Cats have completed their training and are now ready to compete to be maths champions! Join the Karate Cats and improve your KS1 maths skills. Earn the bronze, silver and gold ...

Brendan Byrnes is the Managing Director at Motley Fool Money, where he leads business strategy and editorial operations. Since joining The Motley Fool in 2011, he has written hundreds of articles, ...

Can you chip in? The Internet Archive is working to keep the record straight by recording government websites, news publications, historical documents, and more. We'd be deeply grateful if you'd join ...

Can you chip in? As an independent nonprofit, the Internet Archive is fighting for universal access to quality information. We build and maintain all our own systems, but we don’t charge for access, ...