The Brain Pacemaker: How Deep Brain Stimulation Quiets a Parkinson’s Tremor
Imagine a hand that will not stop shaking. It spills the coffee, smears the signature, and rattles the fork against
Come See the Earth Turn: How Foucault’s Pendulum Proved Our Planet Spins
On February 2, 1851, a handful of Paris scientists received one of the strangest invitations in the history of science.
Puzzle of the Day: Find the 5 Impossible Things in the Clockmaker’s Workshop
Today’s puzzle is a little different: there’s only one picture. At first glance it’s a cozy clockmaker’s workshop late at
The 10 Best Home Telescopes, Ranked (From $300 to $2,400)
Ten home telescopes ranked from about $300 to $2,400, with a clear best overall (Sky-Watcher Classic 200P) and best value (Sky-Watcher Heritage 150).
The Glass Tear That Shrugs Off a Hammer: The 400-Year Puzzle of Prince Rupert’s Drops
A glass teardrop that survives a hammer but explodes when you snap its tail puzzled the Royal Society for centuries. Here’s how frozen-in stress works, and where it hides in your car and phone.
The Riderless Bicycle: Why Bikes Stay Upright, and Why Scientists Got It Wrong for a Century
A rolling bicycle with nobody on it can steer itself upright. For a century the credit went to gyroscopes and trail. Then a 2011 bike with neither proved the real story was stranger.
Puzzle of the Day: Spot 6 Differences at the Picnic
Two sunny picnic scenes look identical, but picture B hides 6 changes. Can you spot them all before you open the answer?
The 5 Best Solar Prominence Images Ever Captured
Solar Orbiter 2022, Norikura 1992, SDO 2012, SOHO’s whip, and the 1946 Grand Daddy — the best solar prominence images ever captured.
Best LEGO Architecture Sets, Ranked
Six current LEGO Architecture sets ranked by value and quality, led by the Great Pyramid of Giza (21058).
Best Espresso Machines (2026): Six Home Picks Compared
A café espresso shot is a short, concentrated brew pushed through finely ground coffee at roughly nine bars of pressure.
The Black Stone That Crowned a Sinking Pyramid: Amenemhat III’s Capstone
In 1900, inspectors at Dahshur found a carved black stone poking out of the sand: the capstone of Amenemhat III’s Black Pyramid, a monument that sank before its king could be buried in it.
The Sailing Stones of Death Valley: How Paper-Thin Ice Pushes Rocks Across a Dry Lake
For decades, rocks on Death Valley’s Racetrack Playa left trails no one saw form. Then GPS-tagged stones and a lucky winter pond caught paper-thin ice pushing them along.
The Top That Flips Itself Over: Tippe Tops, Standing Eggs, and the Rattleback That Spins Backward
A tippe top turns itself upside down, a spun hard-boiled egg stands on end, and a rattleback refuses to spin the wrong way. Friction explains all three.
One Bill to Rule Them All: The X Subscription Bundles Grok, Cursor and X Premium
SpaceXSI just merged Grok, Grok Bot, Cursor and X Premium into one plan with a shared weekly AI usage pool. Here’s what each tier from $0 to $200 a month gets you.
The Brass Spanner That Saved Britain: Defusing Hitler’s Magnetic Mine on the Shoeburyness Mud
How two HMS Vernon officers took apart Germany’s secret magnetic mine on the Shoeburyness mudflats in 1939, and how Britain answered with degaussing.
The Coin That Screams Toward Infinity: The Strange Physics of Euler’s Disk
A lunch-break toy from an aerospace lab sparked a Nature paper and a physics fight over what really stops a spinning coin.
The Unsinkable Iceberg: How Britain Nearly Built an Aircraft Carrier Out of Frozen Sawdust
In 1943 Britain seriously planned a 2-million-ton aircraft carrier made of pykrete, frozen water mixed with wood pulp. Here’s how Project Habakkuk got from a bathtub to a Canadian lake, and why it never sailed.
The Black Box Isn’t Black: How a Jazz Fan’s Wire Recorder Became Aviation’s Memory
The black box isn’t black. How a jazz fan’s wire recorder became aviation’s memory, why recorders are orange, and why some are never found.
Puzzle of the Day: What Number Completes the Shape Cards?
Diamonds and circles on three score cards. Two totals are given — can you find the missing number on card C?
Best Noise-Cancelling Headphones (2026): Six Over-Ear Picks Compared
Six over-ear noise-cancelling headphones compared, from the Sony WH-1000XM6 and Bose QuietComfort Ultra (2nd Gen) to AirPods Max 2, Sennheiser Momentum 4, Beats Studio Pro, and the $40 Soundcore Q20i.
The Bomb That Painted a Fleet: Operation Crossroads and the Ships No One Could Clean
In 1946 the Navy set off two atomic bombs among 90 empty warships at Bikini Atoll. The underwater Baker shot coated the fleet in radioactive mist that no amount of scrubbing could remove.