
Why is it so hard to make a working toilet fit for space travel?
The space environment—microgravity, extreme temperatures and more—make it near-impossible to truly test a space toilet like Artemis II's ahead of launch, experts say

Why is it so hard to make a working toilet fit for space travel?
The space environment—microgravity, extreme temperatures and more—make it near-impossible to truly test a space toilet like Artemis II's ahead of launch, experts say
‘Kraken’ fossils show enormous, intelligent octopuses were top predators in Cretaceous seas
Today’s Spellements

Wildfire ‘red flag’ warnings are in effect for large chunks of the U.S. Here’s what to know
Here’s what stops huge earthquakes in their tracks
Trump administration officially reclassifies some marijuana products as less dangerous drugs
A volcanic mystery reveals that rising magma has a stealth mode

The hidden cause of heart disease is inflammation
How strange new ‘altermagnets’ could rewrite physics
Space hotels are coming soon
Create as many words as you can!
Stretch your math muscles with these puzzles.

Can peanut allergies be cured?
How much vitamin D do you need to stay healthy?
These cancers were beyond treatment—but might not be anymore
‘Cocaine hippos,’ faster aging with HIV and the hidden dangers of inflammation
The dinosaurs at your window: How birds survived the asteroid that killed all other dinosaurs
The fans who went from collecting Pokémon to studying bugs and fossils
Artemis proves NASA can return to the moon. Now comes the hard question: Why?

How did humans evolve language? It may be far more ancient than scientists realized
A new study links genetic regions that predate the divergence of modern humans and Neanderthals to language
Mysterious golden orb discovered two miles below the ocean surface isn’t an alien—it’s an anemone
This enigmatic orb has undergone extensive examination and DNA testing, enabling scientists to reveal its true origins

FBI investigating possible links between deaths and disappearances of at least 10 scientists
This announcement from the FBI came after President Donald Trump highlighted the recent deaths of several scientists and government workers who may have had access to sensitive information

Here’s what the autism spectrum really looks like
The autism spectrum is big, vibrant and complicated, a new graphic of 39 traits shows

Former NASA astronauts launch new group to promote U.S. constitutional values
More than 100 NASA astronauts have signed on to a nonpartisan effort to promote “the principles that have propelled our nation for 250 years”

What if time were reversed? Physicists show how time could flow backward on a quantum scale
Researchers have developed a way to flip time to move backward in a quantum system. This level of control could lead to bizarre real-world applications