This self-powered toothbrush makes electricity to kill cavity-causing bacteria
A toothbrush that generates its own electricity with every stroke could offer a new way to fight the microbes behind cavities and gum disease. Conventional
Category: Science
A 3,200-pound NASA spacecraft could fall to Earth any minute now
Editor’s note: As of 11:15 a.m. EST on Wednesday (Nov. 4), NASA and the Aerospace Corporation both predict that the Swift observatory could have reentered
Earwax’s surprisingly slippery but sticky properties deters insects
A comprehensive study of earwax reveals a combination of slippery and sticky properties that may protect against insect invasions of the ear.
Food contains thousands of overlooked chemicals. This physicist is mapping them
Giulia Menichetti is exploring how food’s vast chemical complexity may shape the microbiome and human health.
Southern Taurid meteor shower could bring fireballs this week — when and where to look
One of autumn’s best opportunities to see brilliant “fireballs” arrives overnight Wednesday and Thursday (Nov. 4-5) during the Southern Taurid meteor shower. Although the Southern
When dinosaurs are sold to the highest bidder, we all lose
Dinosaurs are more than extraordinary specimens with massive price tags. They are irreplaceable snapshots of our planet’s history and our own human journey. When scientifically
Mom experienced ‘extreme unhappiness’ only when she breastfed
The patient: A woman in upstate New York The symptoms: About two weeks after her baby’s birth, the woman began experiencing intensely negative emotions at
How hawkmoths turned their genitals into bat-busting weapons
In arms race with bats, hawkmoths have evolved three distinct ways to make bat-busting ultrasound using their genitalia.
Astronaut and Earth
CSA (Canadian Space Agency) astronaut and Expedition 75 flight engineer Joshua Kutryk is pictured during a spacewalk with his spacesuit’s helmet visor down to install
Would you risk your health to visit Mars?
A crewed mission to Mars could be one of humanity’s greatest achievements, but getting there may come with serious health risks. Beyond the challenges of
A 3,200-pound NASA spacecraft could fall to Earth tonight
Editor’s note: The latest estimates from the Aerospace Corporation predict Swift will reenter the atmosphere at 5:19 a.m. EST on Wednesday (Nov. 4), plus or
Your voice can now say things you never said
Synthetic voices can restore speech, enable scams and outlive their owners. These uses raise questions about trust, consent and control.
A drug-free diabetes treatment? An implant lowers blood sugar in mice
The wireless implant rids mice’s bodies of excess sugar on demand, and helps them shed weight. It could one day help treat diabetes and obesity.
‘Quite a light show’: NASA astronaut snaps atmospheric fireball as Russian rocket explodes over West Africa
QUICK FACTS Where is it? Somewhere over West Africa What’s in the photos? Space debris from a Russian rocket burning up upon reentry Who took