Showing posts tagged
#facts

Is War Over? A Paradox Explained

We live in the most peaceful time in human history. Wait, what? Seriously? That can’t be right, there are more wars than ever!

Well, no and they’re killing fewer and fewer people, even though the world population is at an all-time high…and the numbers prove it!

We explain how we came to this conclusion, and why war might… go away.

www.kurzgesagt.org

Schrödinger’s Cat: A Thought Experiment in Quantum Mechanics

Austrian physicist Erwin Schrödinger, one of the founders of quantum mechanics, posed this famous question: If you put a cat in a sealed box with a device that has a 50% chance of killing the cat in the next hour, what will be the state of the cat when that time is up? Chad Orzel investigates this thought experiment.

Lesson by Chad Orzel, animation by Agota Vegso.

The Chemistry of Pizza (The Food of the God) [Reactions]

Whether it’s a plain cheese, a deep-dish stacked with meats or a thin-crust veggie delight, there’s just something about pizza that makes it delicious. There’s a lot of chemistry that goes into everything from dough to sauce to toppings to, of course, cheese. There’s also a very specific chemical reaction at work on every single slice, no matter what toppings you choose.

It’s called the Maillard Reaction, and it’s what causes the browning of the dough and toppings, as well as the release of some delicious compounds.

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Timelapses of Fast Food Burgers: How Fast Do Burgers Age?

On the one hand, it’s sad to see food go from delicious to inedible in the span of seconds. On the other hands, it’s gross how little evidence of aging several of these show.

The less gross they look, the more disturbing the results.

Science: Where Do Genes Come From?

When life emerged on Earth about 4 billion years ago, the earliest microbes had a set of basic genes that succeeded in keeping them alive.

In the age of humans and other large organisms, there are a lot more genes to go around. Where did all of those new genes come from?

Carl Zimmer examines the mutation and multiplication of genes.

Lesson by Carl Zimmer, animation by TOGETHER.

Why Does Toothpaste Make Orange Juice Taste Bad? [Reactions]

It’s happened to many of us: Half asleep in the morning, you finish brushing your teeth and reach for your daily glass of orange juice.

After taking a big swig, you spit it back out, making a face like you’ve just chewed on a lemon. Turns out, a specific chemical in your toothpaste is responsible for that nasty taste.

On this episode, Reactions explains why toothpaste and orange juice don’t mix.

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Science: Is Telekinesis Real?

Telekinesis, the ability to manipulate matter with the mind alone, is a trait exhibited by some of the most iconic fictional characters, including Neo, Yoda, and, of course, Carrie. But is this mind control actually possible in real life? Emma Bryce subjects telekinesis to the scientific method.

Full lesson by Emma Bryce, animation by Delphine Burrus.

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