Technology

Yes, Emissions Have Fallen. That Won’t Fix Climate Change

The drop in carbon pollution will cool the planet only a tiny bit. So how about this: Revive the economy and the Earth by pouring...

The End Is Nearer for ‘Forever Chemicals’ in Food Wrappers

Your takeout may come with a dose of chemicals known as PFAS—but the FDA’s push to get rid of some of them will take five years.

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Bill Gates on Covid: Most US Tests Are ‘Completely Garbage’

The techie-turned-philanthropist on vaccines, Trump, and why social media is “a poisoned chalice.”

Yes, Emissions Have Fallen. That Won't Fix Climate Change

The drop in carbon pollution will only cool the planet a tiny bit. So how about this: Revive the economy and the Earth by pouring...

Why Do Razor Blades Get Dull So Quickly?

An MIT team tackled the mystery of why something as soft as hair can erode a steel blade, hoping to figure out how to make shaving...

The US Is Disastrously Behind in Coronavirus Testing. Again

With coronavirus infections rampant in parts of the nation, backlogs are preventing people from getting timely test results, hampering...

Why Do Razor Blades Dull So Quickly?

An MIT team tackled the mystery of why something as soft as hair can erode a steel blade, hoping to figure out how to make shaving...

The US Is Disastrously Behind in Covid-19 Testing. Again

With infections rampant in parts of the nation, backlogs are preventing people from getting timely test results, hampering efforts...

The Feds Want These Teams to Hack a Satellite—From Home

Meet the hackers who, this weekend, will try to commandeer an actual orbiter as part of a Defcon contest hosted by the Air Force and...

Could a Janky, Jury-Rigged Air Purifier Help Fight Covid-19?

Indoor air experts think: Sure, maybe. Why the hell not? We convinced the CEO of an air filter company to give it a try.