Did We Get Human Population Numbers Wrong?

New research challenges the 8.2B count.

View in Browser  DIGITAL ISSUES GEAR REVIEWS SUBSCRIBE Oops, Scientists May Have Severely Miscalculated How Many Humans Are on Earth We have to start counting from 1 again. Read More Engineers Just Developed a Perfect Material for a Truly Unsinkable Ship For years researchers have tried to unlock the impressive underwater abilities of the diving bell spider, and new study details their best attempt yet. Read More You Can Develop a Sixth Sense—And Transform Your Perception of Reality It may seem remarkable, but significant evidence shows that humans could learn this sound-based "superpower" with some practice. Read More Presidents' Day Discounts Make Backup Power More Affordable. Tested Brands Are Now Up To 55% Off. You can save big on some of our top portable power stations, with discounts on models from Jackery, EcoFlow, and more. Read More A Simple Trick Could Improve Your Memory by a Whopping 226%, Scientists Say This surprising sensory shortcut is hiding in plain ... smell. Read More A Whole Bunch of Satellites Could Crash Out of Orbit in Just 5 Days The CRASH Clock is a new predictor of how much time there will be before a collision if a solar storm knocks out power and makes satellites impossible to maneuver. Read More Need Assistance? Contact Us. Follow Us Unsubscribe | Manage Preferences | Privacy Notice | CA Notice at Collection Popular Mechanics is a publication of Hearst Magazines. ©2026 Hearst Magazine Media, Inc. All Rights Reserved. This email was sent by Hearst Magazines, 300 West 57th Street, New York, NY 10019-3779

Could Gray Hair Be Reversed? Research Says Yes

Pigment stem cell movements may unlock natural color

View in Browser  DIGITAL ISSUES GEAR REVIEWS SUBSCRIBE A Study Says Gray Hair May Be Reversible Bad news for Just For Men. Read More A Toddler Picked Up Dad's Metal Detector and Accidentally Found a Priceless Historical Artifact The incredibly lucky find is now in the British Museum. Read More Scientists Drilled So Deep Into the Center of the Earth, They Knocked on the Mantle's Door The record-breaking mission offers an unprecedented opportunity to study the geology of our planet's largest layer. Read More The Frogs of Chernobyl Are Getting Darker in Real Time The frogs' adaptation is similar to adaptations made by humans in high-radiation regions, pointing to an underlying resilience in life itself. Read More This Famous Raphael Painting Has 4 Faces. A New Study Says He Didn't Paint Them All. The study says that AI likely proved that one of the great painter's students may have pitched in on the Madonna Della Rosa. Read More 11 Best Presidents' Day Lego Deals for 2026 We're seeing up to 50% off on some of our favorite sets. Read More Need Assistance? Contact Us. Follow Us Unsubscribe | Manage Preferences | Privacy Notice | CA Notice at Collection Popular Mechanics is a publication of Hearst Magazines. ©2026 Hearst Magazine Media, Inc. All Rights Reserved. This email was sent by Hearst Magazines, 300 West 57th Street, New York, NY 10019-3779