India's Massive COVID Surge Puzzles Scientists

Covid-19 news: Vaccine likely to have slashed UK hospitalisations

An unvaccinated worker set off an outbreak at a U.S. nursing home where most residents were immunized.

Cosmism: Russia's religion for the rocket age. Nikolai Fyodorov's beliefs in a cosmic religion centred on life off Earth helped inspire some of the Soviet Union's most brilliant engineers.