Mouse sperm thrived despite six years of exposure to space radiation
Sperm appears to be unfazed by long stints in outer space. In the longest biological experiment on the International Space Station yet, freeze-dried mouse...
SCIENTIFIC NEWS
Here’s what you should know about COVID-19 vaccine booster shots
Roughly six months ago, on December 11, the Food and Drug Administration authorized the first COVID-19 vaccine for emergency use in the United States....
An arc of galaxies 3 billion light-years long may challenge cosmology
A giant arc of galaxies appears to stretch across more than 3 billion light-years in the distant universe. If the arc turns out to...
Scientists have found the origins of a mysterious, deadly flood in India
On February 7, a massive flood rushed through a valley in India’s Himalayan Uttarakhand state, washing out two hydroelectric power plants and leaving at...
Cells cram DNA into the nucleus in two distinct ways
There are only so many ways to cram DNA into a cell’s nucleus, a study suggests. A cell’s complete genetic blueprint, or genome, is...
Physicists dream big with an idea for a particle collider on the moon
If you could peer into a particle physicist’s daydream, you might spy a vision of a giant lunar particle accelerator. Now, researchers have calculated...
New clues suggest people reached the Americas around 30,000 years ago
Humans may have inhabited what’s now southern Mexico surprisingly early, between 33,448 and 28,279 years ago, researchers say. If so, those people arrived more...
Solving mysteries of reproduction helped make parenthood possible for millions
In the beginning, no one really understood how babies were made. Thinkers puzzled for millennia about how life arose from one generation to the...
A deep look at a speck of human brain reveals never-before-seen quirks
A new view of the human brain shows its cellular residents in all their wild and weird glory. The map, drawn from a tiny...
The mere sight of illness may kick-start a canary’s immune system
For canaries, just seeing their feathered friends get sick may be enough to preemptively rev up their immune systems. Healthy birds housed within view...
Newborn screening for cancer risk could save lives. Should it be done? 
World marks second warmest July on record 
Ebola deaths top 2,000 as scientists race to develop vaccine 
South Sudan: UN mission decries deadly attacks, works to calm tensions after ‘nothing but devastation’