At about 50,000 times the mass of the sun, this intermediate-mass black hole skirts the line between shrimp and giant. ...read more

Viruses must first blast through five or six barriers before they’re able to infect us and unleash havoc. ...read more

Kombucha is often hailed as a healing elixir — but are the health claims too good to be true? ...read more

Around the world, physicians at overwhelmed hospitals may have to decide who will not get treated during the pandemic. ...read more

Polio was nearly eradicated with the Salk vaccine in 1955. At the time, little was known about this mysterious disease that paralyzed and sometimes killed young children. ...read more

It’s not an April Fools’ gag. Scientists just tested and confirmed that urea, a main component of human pee, can be used as a valuable additive for 3D printing structures made from lunar soil. ...read more

In a small study, patients with mild COVID-19 infections were at greatest risk of spreading the virus within the first five days of developing symptoms. ...read more

A remarkably well-preserved soil sample leads researchers to believe the frozen continent was once home to a swampy ecosystem. ...read more

Some experts say measures such as sanitizing your groceries are overkill. Just make sure to wash your hands instead. ...read more

Remains found in Spanish caves also have modern-like facial characteristics. ...read more