Only Slate Plus members can gift Slate stories. Become a member to share 10 free articles a month. Even some young people now regard age 25 as a turning point with seemingly magical properties. In one ...

Trying to put off aging forever? It’s a popular goal: The anti-aging market, valued at $40 billion, is estimated to hit $60 billion by 2032. To stave off old age, people slather on wrinkle cream, pop ...

Mild to moderate cases of COVID-19 are infectious no longer than 10 days after symptoms start. You should keep isolating until your symptoms improve and you are fever-free for 24 hours without ...