Tag «Green»

A Brief History of Life: Rise of the Humans

A Brief History of Life: Rise of the Humans

Today we’re going to conclude our miniseries about the history of life on Earth by talking about the Cenozoic era, from 65 million years ago to the present. Cenozoic means “recent animals,” which makes sense, since it’s the era we’re still in. During the Cenozoic, animals and plants and everything else evolved to the forms …

Bitcoin: How Cryptocurrencies Work

Bitcoin: How Cryptocurrencies Work

Say there’s a coin that’s currently worth hundreds of U.S. dollars, but it’s not made of gold, or platinum, or any precious metal. In fact, it’s not the kind of coin you can hold in your hand or stick in a piggy bank. It’s a digital currency, which means it only exists electronically. I’m talking …

Top 10 Energy Sources of the Future

Top 10 Energy Sources of the Future

It’s a really exciting time to be alive. We have a front row seat to the only known transformation of a world powered by dirty fossil fuels, to a planet that gets its energy from renewable, clean sources. It’s going to happen just once, right now. These are the top 10 potential energy sources of …

The Fog That Killed 12,000 People

The Fog That Killed 12,000 People

[♪ INTRO] London is famously foggy. Sometimes that can mean a wistful stroll or another excuse for a cuppa tea, but when fog mixes with the smoke and chemicals produced by industry, it becomes something new: smog. And for a couple of centuries, London’s smog could kill. Really bad smogs could kill a thousand people …

Bad Science: Breast Milk and Formula

Bad Science: Breast Milk and Formula

Thanks to Skillshare for supporting this episode of SciShow. [ ♪INTRO ] If you’ve had a baby in the last couple decades or so, you’ve probably been told that “breast is best.” That you should make sure your baby gets only breast milk for the first six months of its life. It’s a saying that …

3 of the Biggest Experiments Ever

3 of the Biggest Experiments Ever

SciShow is supported by Squarespace. Whether you need a domain, website, or online store, make it with Squarespace [♪INTRO] It’s one of those fundamental rules of the universe that we all eventually learn growing up: like, life isn’t fair, Picard was a better starship captain than Kirk, and bigger isn’t always better. Sometimes though, there …

Is Alkaline Water Really Better For You?

Is Alkaline Water Really Better For You?

[ intro ] You may have heard of alkaline water— it’s the newest health trend hitting grocery shelves. These products are essentially just water treated to have a more basic pH between 8 and 10 instead of water’s usual neutral 7. And supposedly, they take your internal chemistry from acidic to alkaline, leaving you more …

5 of the Worst Computer Viruses Ever

This episode of SciShow might make you a little paranoid about computer viruses and internet security. But that’s probably a good thing. When we talk about a computer virus, we usually mean any kind of code that’s designed to do harm and spread itself to more computers. They’re created by malicious programmers who might want …

What If We Killed All the Mosquitoes?

What If We Killed All the Mosquitoes?

Mosquitoes suck. Not just literally, their bites are also itchy and annoying, and certain species transmit parasites and viruses — like the ones that cause Malaria, Yellow Fever, and Zika — infecting and killing hundreds of thousands of people every year. And when we told you about the Zika virus two weeks ago, a lot …