Over 500,000 pounds of human garbage litter the moon. A group of scientists says we have entered the 'lunar Anthropocene.'

Tech Insider : Technology, Environment
Photo of Eugene Cernan on the Moon during the Apollo 17 mission.
Eugene Cernan was the last man to walk on the moon.

Harrison Schmitt/NASA

A shark regenerated an entire hole in its fin in under a year and scientists got the amazing transformation on camera

Tech Insider
A live shark's fin with a giant hole in it.
Rather than a tracking tag telling scientists where this shark traveled, its violent removal let them observe an unexpected regeneration process.

Josh Schellenberg, CC BY-ND

A scientist explains what would happen if all the fish in the ocean disappeared

Tech Insider
A camera angle looks underwater to the ocean surface, showing hundreds of fish in a giant school swimming above the camera.
There are an estimated 20,000 known species of fish, but NOAA suggests there could be another 20,000 more unaccounted for.

Giordano Cipriani/Getty Images

An astronomer explains why the universe looks black even though it contains 200 billion trillion stars

Tech Insider
image of space with cluster of galaxies and stars everywhere
James Webb Space Telescope's view of Pandora's Cluster.

NASA, ESA, CSA, Ivo Labbe (Swinburne), Rachel Bezanson (University of Pittsburgh)

A psychologist explains why you should probably practice more humility, and how not to be a pushover in the process

Tech Insider
People in an office arguing or talking
When you approach challenging discussions with curiosity and humility, they become opportunities to learn and grow.

Westend61/Getty Images

What's the most sustainable type of Christmas tree? Depends on what you want, a forestry expert says

Tech Insider
A photo of a real Christmas tree outdoors next to a fake Christmas tree indoors.
It can take hundreds of years for an artificial tree to decompose once you throw it out.

[left] Jim Craigmyle; [right] Picture alliance/Getty Images

A physicist says it's possible to determine if our universe is a giant simulation and has launched a crowdfunding campaign to fund his experiment

Tech Insider
matrix
"The Matrix" brought the concept that we may all be living in a computer simulation to the masses.

via DVDBeaver

How did the zebra get its nicely patterned stripes? The answer may come from mathematician Alan Turing.

Tech Insider
zoo captivity zebra
A zebra's stripes help it hide from predators, but how do they form so evenly spaced?

Reuters/Jose Luis Gonzalez

The US went from having 356 to 10,000 roundabouts in 2 decades, and a transportation engineer explains why they're so much better than traffic lights

Tech Insider
Roundabout Romania
A roundabout has less potential conflict points than an intersection.

CallinStan/iStock

The world's first dog-fox hybrid was genetically confirmed in Brazil. It's a problem.

Tech Insider
Domestic dog on left and pampas fox on right.
A dog-fox hybrid between a domestic dog (like the one on the left) and a pampas fox (like the one on the right) was long thought to be impossible.

Lourdes Balduque / Edsel Querini / Getty Images

Subscribe to the-conversation