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Over the course of human history, thousands of languages have developed from what was once a much smaller number. How did we end up with so many? And how do we keep track of them all? Alex Gendler explains how linguists group languages into language families, demonstrating how these linguistic trees give us crucial insights into the past.

The ubiquitous yin-yang symbol holds its roots in Taoism/Daoism, a Chinese religion and philosophy. The yin, the dark swirl, is associated with shadows, femininity, and the trough of a wave; the yang, the light swirl, represents brightness, passion and growth. John Bellaimey explains why we all contain the spirit of yin and of yang -- and how we can achieve a balance of both in our lives.

I'm filming a documentary for TV about how Uranium and radioactivity have shaped the modern world. It will be broadcast in mid-2015, details to come. The filming took me to the most radioactive places on Earth (and some places, which surprisingly aren't as radioactive as you'd think). Chernobyl and Fukushima were incredible to see as they present post-apocalyptic landscapes. I also visited nuclear power plants, research reactors, Marie Curie's institute, Einstein's apartment, nuclear medicine areas of hospitals, uranium mines, nuclear bomb sites, and interviewed numerous experts.

When you take a bite of a hot pepper, your body reacts as if your mouth is on fire -- because that's essentially what you've told your brain! Rose Eveleth details the science and history behind spicy foods, giving insights into why some people continue to pay the painful price for a little spice.

GE ??created a pop-up #EmojiScience ?lab in NYC , and has turned the Periodic Table of Elements into the ?Emoji Table of Experiments?.

The earliest recorded tattoo was found on a Peruvian mummy in 6,000 BC. That's some old ink! And considering humans lose roughly 40,000 skin cells per hour, how do these markings last? Claudia Aguirre details the different methods, machines and macrophages (you'll see) that go into making tattoos stand the test of time.

Chernobyl is one of the most interesting and dangerous places I've been. The nuclear disaster, which happened in 1986; the year after I was born, had an effect on so many people, including my family when we lived in Italy. The nuclear dust clouds swept westward towards us. The Italian police went round and threw away all the local produce and my mother rushed out to purchase as much tinned milk as possible to feed me, her infant son.

Agriculture, hula hoops, SARS, and THIS video: how long did they take to get around the earth?

Greg Foot tries to dive into the topic of Evolution; looking at why monkeys exist, who our common ancestor is, and how we branched away to become a new species.

A misnomer is a word or term that suggests a meaning that is known to be wrong. Misnomers often arise because the thing named received its name long before its true nature was known. A misnomer may also be simply a word that is used incorrectly or misleadingly.

The American Museum of Ceramic Art is honored to present ICHEON: Reviving the Korean Ceramics tradition, an unprecedented exhibition organized by Icheon, South Korea. Icheon has a history of ceramic culture that began over 5000 years ago and has a reputation for its internationally renowned ceramics cultural events.

If you are a living, breathing human being, chances are you have felt sad at least a few times in your life. But what exactly is melancholy, and what (if anything) should we do about it? Courtney Stephens details our still-evolving understanding of sadness -- and even makes a case for its usefulness.

Adam Savage walks through two spectacular examples of profound scientific discoveries that came from simple, creative methods anyone could have followed -- Eratosthenes' calculation of the Earth's circumference around 200 BC and Hippolyte Fizeau's measurement of the speed of light in 1849.

Fossil fuels have powered human growth and ingenuity for centuries. Now that we're reaching the end of cheap and abundant oil and coal supplies, we're in for an exciting ride. While there's a real risk that we'll fall off a cliff, there's still time to control our transition to a post-carbon future.

Sir Nicholas Winton who organized the rescue and passage to Britain of about 669 mostly Jewish Czechoslovakian children destined for the Nazi death camps before World War II in an operation known as the Czech Kindertransport.

This week marks the 178th anniversary of Darwin's first exploration of the Galapagos Islands. This volcanic archipelago is one of the most biodiverse and unique places on the planet, with species that have remarkably adapted to their environment. Through observing the animals, Darwin made key insights that informed his theory of evolution. Here's a short documentary that captures the 10-day expedition: More info

Everlast is a 103 year old boxing brand that has served Greats like Ali, Robinson and even a young amateur named Mandela. As a brand, Everlast shares the same value as the sport of boxing - power means nothing without control.