A CDC report provides evidence that the delta variant is transmissible in vaccinated people who get infected. But that's not a reason to question vaccines, experts say.
The Bootleg wildfire is the largest in the US so far this year.
We look at pandemic pushback, algorithms setting the rhythms of our daily lives, an Airbnb-style business for swimming pools and much more.
Break out the binoculars and telescopes. Saturn is showing off for us.
This season's spectacle of shooting stars is just getting started.
In a hair-raising event, the Nauka module pushed the International Space Station out of orientation for a time.
A new report from the CDC confirms what experts have been saying about delta: it's more contagious, likely more severe and certain people are more at risk.
A summer of rain and heat is causing yet another meltdown for one of the planet's most important reserves of ice.
A technical issue with the ISS has pushed back Boeing's effort to catch up with SpaceX to no earlier than Aug. 3.
A toxic smoke warning has been issued near Geelong, Victoria, as fire crews wait for the blaze to die down.
The CDC recently updated its stance to say fully vaccinated people should wear masks in certain areas. We'll explain what's going on.
With delta variant cases growing, how can you protect yourself from the dominant COVID-19 strain? Here's what to know about the discussion over vaccine boosters.