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The Most Radioactive Places on Earth

The Most Radioactive Places on Earth

Radiation is frightening. At least, certain types of it are. I mean my Geiger counter doesn’t go off near my mobile phone, or the Wi-Fi router or my microwave. That’s because a Geiger counter only measures ionizing radiation — that is, radiation with enough energy to rip electrons off atoms. And it’s measured in units called sieverts. If you’re exposed…

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The Real Moral Dilemma of Self-Driving Cars

The Real Moral Dilemma of Self-Driving Cars

Push this button. It’s driving itself. It feels good. So, BMW brought me to the Consumer Electornics Show here in Las Vegas. I’m going to check out the future of driving. Did I get it? Am I near? [unintelligible] Oh! I felt it! That really felt like pushing a button. In this concept car, there’s a holographic menu screen. It…

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Avoid electric shock getting out of a car!

Avoid electric shock getting out of a car!

[MUSIC PLAYING] [MUSIC PLAYING] [ZAP] I hate that! Why do you get shocked sometimes when you get out of your car? Or when you touch a doorknob? Or when you take off a sweater and hug someone? And is there a way to not get shocked? To prevent this from happening, you have to figure out what’s happening. So this…

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World’s Lightest Solid!

World’s Lightest Solid!

This is aerogel. The world’s lightest, that is least dense, solid. This piece has a mass of just 1.22 grams. That is only a few times the mass of the same volume of air, which kind of makes sense because it is 99.8% air. In fact, some aerogels are so light that if you removed all the air from them,…

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World’s First Car!

World’s First Car!

– I am about to drive the world’s first car. This was invented by Karl Benz, patented in 1886. Of course, this is not the real thing, this is a replica. But I’ve partnered with Mercedes to make a video about car safety. – Yeah. (laughs) – Right? There’s not a lot of safety here. Safety would come later. You…

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Why Are Mosquitoes Attracted To You?!

Why Are Mosquitoes Attracted To You?!

Are you the person in the group who’s always getting bitten by mosquitoes? Because I certainly am and science has shown that this is a thing – that mosquitoes are more attracted to some people than others. And the reason for that is at least partially genetic, which is why this video is supported by 23andMe, a company that reads…

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Why the Future of Cars is Electric

Why the Future of Cars is Electric

I was invited here, to Munich, by BMW the sponsor of this video to find out why the future of cars is electric. But electric cars are actually nothing new — they date back to 1832, well before the first gasoline-powered car. In fact, the first car to go faster than a hundred kilometers per hour was in 1899, an…

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