Gurjeet singh

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E=mc² became famous for all the wrong reasons

If a time traveler assassinated Albert Einstein before he figured out that E=mc², would we still have atomic weapons?<p><i>Note: Below is the script for the video, above. You may want to just watch the video instead. Oh, also, subscribe to</i> Popular Science <i>on YouTube.</i><p><b>President:</b> "Suppose I gave you a chance …

Physics

Make your life paperless with these apps and gadgets

The best ways to digitize everything.<p>Despite the rise of digital devices, many an office—professional and home alike—remains buried under a never-ending stream of paper. These reams kill trees, create clutter, and make it well-nigh impossible to find the one document that you're looking for. So go …

This App Will Turn You Into a Grammar Wizard

Be a more productive writer in 2018 with Grammarly.<p>Save yourself from grammar-induced embarrassment and invest in a tool that will serve as your personal editor. Developed by linguists and language lovers, Grammarly Premium is an innovative writing app that examines and corrects hundreds of …

Is hand sanitizer bad for my microbiome?

Don't lose your good bacteria just because someone sneezed.<p>Bacteria used to be the enemy. Before the invention of antibiotics, most of our dealings with bacteria—that we were aware of—ended in death. Because of that, most of us feel like hand sanitizer, being a pretty powerful bacterial …

Biology

All the cool new friends you'll meet when you drink raw water

So many buddies are going to show up in your GI tract.<p>Do you ever feel like your drinking water is <i>just too clean</i>? Last week, <i>The New York Times</i> reported on a trendy new beverage known as raw water. Yes: people are spending loads on unfiltered, untreated, and totally unsterilized spring water.<p>“It has …

E.coli

This is what a scientist wears to keep warm in -40°F

Ryan Knapp works at the Mount Washington Observatory, where the wind chill can drop below -70 degrees.<p>Ryan Knapp is a senior staff meteorologist and weather observer at the Mount Washington Observatory in White Mountains, New Hampshire. When we talked on the phone, the temperature at the …

Backpacking

Scientists know how to make mice angry—but mice know how to keep their cool

The first rule of mouse fight club.<p>Male territoriality is a pretty well-defined scientific concept. Some animals mark their domain with rocks or urine, others attack intruders (and we've all seen guys who pick fights at the bar).<p>Researchers at Stanford University Medical Center have taken a closer …

Neuroscience

Legendary Apollo Astronaut John Young Has Died

He was 87.<p>Legendary astronaut John Young, who walked on the moon and later commanded the first space shuttle flight, has died, NASA said Saturday. Young was 87.<p>The space agency said Young died Friday night at home in Houston following complications from pneumonia.<p>NASA called Young one of its …

Earth's most mysterious hums, ranked

Our planet makes a lot of sounds, and some of them are spooky.<p>When all else is quiet, Earth still hums. Scientists have known about this low-frequency droning for years, but last month researchers published the first-ever study to record the not-so-noisy noise on the bottom of the ocean. The paper …

Nuclear Physicist and NIAS Director Baldev Raj No More

<b>Chennai</b>: Baldev Raj, the director of the National Institute of Advanced Studies (NIAS), Bengaluru, and a renowned administrator of nuclear power …

India