“This is a convenient method for patients to use pills they already have,” she says. Both doses of pills should be taken as soon as possible, ideally within 72 hours (three days) of unprotected sex, ...

Terms apply to American Express benefits and offers. Visit americanexpress.com to learn more. Any time you tap, swipe or dip a credit or debit card at checkout or enter your card number online, you ...

Atomistic simulations are vital for computational chemistry and materials science, but their adoption remains challenging due to the need for expert knowledge and manual effort for the setup, ...

US chemist Alice Ball was born in Seattle, Washington, on 24 July 1892. She came from a middle-class African-American family of photographers; her grandfather, James Presley Ball, was one of the first ...