Comets’ heads can be green, but never their tails: After 90 years, we finally know why

106.5 FM: the prison radio station giving Texas men on death row a voice

Have you read a lot of our catalog? If so, can you help us update our Greatest Hits?

Does Not Compute: Why Machines Need a Practical Sense of Humor

Snow is glowing in the Russian Arctic. The culprit? Tiny sea creatures.

Detailed Footage Finally Reveals What Triggers Lightning

SpinLaunch Successfully Throws A 10-Meter Dart Toward Space

How Mathematicians Cracked the Zodiac Killer’s Cipher

The story of the fight to archive the internet

Video: Exploring 300 Million Dollar Gilded Aged Mansion (ftr: we do not endorse trespassing) [41:19]

James Webb Space Telescope vs. Hubble: How will their images compare?

Deadliest period in Earth’s history was also the stinkiest

New York has a huge rat problem. These vigilantes with dogs think they can fix it

How are Rome’s monuments still standing?

Scientists have a new theory explaining liquid water on Mars

Rare and frightening footballfish washes up in California – again

Prison Phone Companies Are Recording Attorney-Client Calls Across the US

Why NASA’s new James Webb Space Telescope, the successor to the Hubble, has ‘perfectly misshaped’ mirrors

Five ice-age mammoths unearthed in Cotswolds after 220,000 years

A domestic newspaper warns of the Russian space program’s “rapid collapse”

Why This Ancient Civilization Fell Out of Love With Gold for 700 Years

The US Mountain West Could Soon Face Snowless Winters

41,000 years ago, auroras blazed near the equator

Scientists have successfully taught a collection of brain cells in a petri dish how to play the video game “Pong”

Colossal ‘Fossil’ Structures Have Been Detected Lurking on The Outskirts of Our Galaxy

Juno flyby reveals stunning new images of Jupiter, sounds of its moon Ganymede

Video: The dark history of Mount Rushmore [5:13]

‘Extraordinary’ restoration of Roman rock crystal jar from Galloway hoard

Horseshoe crabs are in danger because everyone wants their blood

These Planets Are Crumbling Into Dust in Front of Our Eyes

Meet the man who accidentally started an assassin hiring website

The ‘runner’s high’ may result from molecules called cannabinoids – the body’s own version of THC and CBD

Airseas installs its first fuel-saving auto-kite on a cargo ship

The universe is expanding faster than it should be

Vacuum-Sealed Container From 1972 Moon Landing Will Finally Be Opened

Flexible paper-based battery is designed to biodegrade once discarded

Quantum physics requires imaginary numbers to explain reality

A tantalizing clue to why omicron is spreading so quickly

This week: 🐪 Camel beauty pageants, 🦛 Hippo gut sharing, 🦠 Anti-COVID chewing gum…and more!

Are We Ready for the Next Big Solar Storm?

Brain wrinkles and folds matter – researchers are studying the mechanics of how they form

How a strange bird from Mexico became a Christmas staple

Pluto’s bizarre polygons now have a science explanation

Video: Fingers Crossed for the James Webb Space Telescope [15:05]

Whatever Happened to Airships?

Mel Brooks on the Making of Spaceballs

What Does It Mean for AI to Understand?

NASA’s Perseverance rover finds organic chemicals on Mars

What’s Stopping Scientists from Making Viable Synthetic Blood?

The American Addiction to Speeding

This Millipede Has 1,306 Legs—The Most on Earth

Video: Why New York’s Billionaires’ Row Is Half Empty [28:37]

The lawyer who tried faking his death, and the writer exposing his crime dynasty

How a fly’s brain calculates its position in space

A Sun-Like Star Just Blasted out a Flare That Would be Devastating if it Happened Here

The Appeal of Artists Who Won Fame After Death

Even Really Massive Stars Seem to Have Planets

Scientists Just Found a ‘Significant’ Volume of Water Inside Mars’ Grand Canyon

From hairpin to house: woman who mastered ‘trading up’ realizes dream

Here Are the Juiciest Bits From the Secret JFK Document Dump