What is a supervolcano? The answer isn't so simple.
Supervolcanoes are defined by their ability to produce supereruptions — explosions of more than 240 cubic miles of volcanic material. But scientists disagree on how useful the term is.
Space
James Webb telescope finds water in roiling disk of gas around ultra-hot star for 1st time ever
The James Webb Space Telescope's discovery of water and other molecules in the inner region of a hot protoplanetary disk suggests that rocky, Earth-like planets may be able to form in some very extreme environments.
Health
Electrical stimulation could treat traumatic brain injuries
An early trial suggests that deep brain stimulation could treat cognitive impairment associated with traumatic brain injury.
Animals
World's oldest tortoise still randy at 191 years old
Jonathan, the world's oldest tortoise, has turned 191, living through 40 U.S. presidents and 31 St. Helena governors.
Human Behavior
'Yeti hair' found in Himalayas is actually from a horse, BBC series reveals
DNA from a supposed Abominable Snowman actually came from a horse, but that doesn't mean stories of the Yeti passed on by local people aren't important.
Physics & Mathematics
Electricity flows like water in 'strange metals,' and physicists don't know why
A weird phenomenon in which electricity flows like water was spotted in a nanowire made of "strange metal" — a bizarre metal phase that has stumped physicists for 40 years.
Chemistry
Why does ice float?
Why does ice float in water, instead of sinking to the bottom? It has to do with water's density and molecular structure.
Tech
Scientists uncover the secret to building Star Wars-style laser weapons — but don't worry, we won't have a Death Star anytime soon
Today's infrared lasers are only powerful enough to disable aerial targets, but scientists now have the keys to building high-powered laser weaponry that can 'melt' distant targets.
