David Grossman

David Grossman

David Grossman is a staff writer for PopularMechanics.com. He's previously written for The Verge, Rolling Stone, The New Republic and several other publications. He's based out of Brooklyn.

helium hydride
NASA Found the Oldest Molecules in the Universe

Helium hydride has been hiding for 13 billion years. Scientists finally found it.

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climate change hurricane florence
Global Warming Is Already Costing the Insurance Industry Historic Amounts

And that's only expected to rise, says a major reinsurance company.

cripsr work
US Cancer Patients Are Undergoing CRISPR Tests For The First Time

The high-profile experimental technique got a bad rap in 2018. Scientists are trying for a second introduction in 2019.

titan moon
Cassini Found That Titan Has Lakes of Methane Resting on Giant Mesas

The lakes form with processes similar to some that occur on Earth, scientists believe.

old bones thames oxfordshire
Water Pipeline Workers Stumble Across Dozens of Iron Age Skeletons
Dating back over 2,000 years, the remains, some possibly victims of human sacrifice, could offer a vital look into the country's ancien…
Climate Change Could Unleash Long-Frozen Radiation

Atomic bombs, Chernobyl,Fukushima—radiation has traveled and frozen all over the world. Global warming is changing that.

alligator getting devoured by giant isopods
This Video of Giant Isopods Eating Alligators Is What Life May Have Looked Like Millions of Years Ag

They've been around for 200 million years and they've developed a taste for gator.

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mark scott kelly space twins
Here's What We Learned From NASA's Historic Twin Study

A year on the ISS will alter an identical twin in very small ways.

Lockheed Martin lunar lander
Lockheed Martin's New Lunar Lander Wants To Put Humans on the Moon by 2024

With a five-year deadline looming, Lockheed Martin reimagined its lunar lander concept for a speedier timetable.

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airplane toilet
Using Physics To Build a Quieter Airplane Toilet

Everyone uses it, so a team of researchers made the airplane bathroom much more pleasant.

land whale pacific ocean
Ancient Pacific Whales Lived On Land Like Rhinos

They also used their tails in the water like beavers.

great barrier reef
Climate Change Has Fundamentally Weakened The Great Barrier Reef

Climbing temperatures have made it harder for the world wonder to recover from mass bleachings, a new study shows.

The Real World Stuff Behind Star Wars' Iconic Sounds

Sound designer Ben Burtt explains why TIE fighters sound like elephants.

bestsellter tower concept drawing
Why a 1,000-Foot Skyscraper Will Be Built in a Little Denmark Town

The Bestseller Tower will be seen from miles away, standing over a city of 7,000.

graphic comet destruction of earth
The Annihilation Event That Killed The Dinosaurs Left This Diverse Graveyard Trapped in Time

It's the first known graveyard associated with the apocaylptic event, called the K-T boundary.

dlr sleep study cologne germany
Scientists Want To Pay Someone $19,000 to Lie Down For Two Months

All that lying down on the job will help increase our understanding of weightlessness.

saturn cassini
The Stuff of Saturn's Rings Actually Coats Its Tiny Ravioli Moons

A new analysis of the ringed planet's inner moons shines a light on their origins.

boston dynamics handle robot
Boston Dynamics New Robot Is a Warehouse Wizard

Not a robotic dog, but possibly just as scary.

saltwater hydrogen energy
Scientists Are Now Transforming Saltwater Into Hydrogen Fuel

The trick is nickel, and lots of negative charges.

mayotte french island
Huge Underwater Eruption May Have Rattled the Entire Earth and We Barely Noticed

The tiny island of Mayotte is at the epicenter of a mysterious underwater phenomena which began last year.

The ISS Toilet Door Got a New High-Tech Coating Because Space Germs Don't Mess Around

Space can mutate bacteria into something fierce. A new surface is keeping them at bay.

Sighting compass with dial pointing to magnetic north
Some Humans Can Detect the Earth's Magnetic Field

Only in very, very specific circumstances, but the data shows it is possible.

meteor russia oxford
A Meteor Hit Earth With the Force of a Nuclear Bomb and We Hardly Even Noticed

The Kamchatka meteor's impact last year was remote and sudden, showing the limits of detecting objects from space.