This video explores the fascinating world of orchids, showcasing their unique strategies for survival and reproduction. From mooching off fungi to cheating pollinators and thriving in inhospitable environments, orchids have evolved into...

Can the interests of an individual nation be reconciled with humanity's greater good? Can a patriotic, nationally elected politician really give people in other countries equal consideration? Following his TEDTalk calling for a global...

Smallpox is the first and only human disease we've totally wiped out. However, thanks to breakthroughs made while eradicating smallpox and a number of other creative solutions , we've come really close to making a few more diseases a...

From nourishing our foods to storing massive amounts of carbon, soil is teeming with diverse microbial life that could slow global warming. Climate change scientist Jane Zelikova calls for agricultural practices that protect Earth's soil...

What makes a great leader? Management theorist Simon Sinek suggests, it’s someone who makes their employees feel secure, who draws staffers into a circle of trust. But creating trust and safety — especially in an uneven economy — means...

THE FINAL SHOWDOWN! This is the last episode on the immune system and also the very last episode of Crash Course Anatomy & Physiology. In it, Hank explains how the cellular immune response uses helper, cytotoxic, and regulatory T...

The smartphone you use reflects more than just personal taste ... it could determine how closely you can be tracked, too. Privacy expert and TED Fellow Christopher Soghoian details a glaring difference between the encryption used on...

The immense swell of a tsunami can grow up to 100 feet, hitting speeds over 500 mph -- a treacherous combination for anyone or anything in its path. Alex Gendler details the causes of these towering terrors and explains how scientists...

Want to do more than talk to your refrigerator and control your lights with your phone? Hank explains how close we are to the smart home that can do everything for us.

Everybody knows what anxiety feels like - it's annoying and counterproductive and apparently useless, so why does it exist? It turns out your anxiety isn't useless at all - it's a result of the sympathetic nervous system (in charge of...

All year long, researchers at hospitals around the world collect samples from flu patients and send them to top virology experts with one goal: to design the vaccine for the next flu season. But why do we need a new one every year?...

Plants need sunlight to live, but they also need to block the sun's more harmful rays. Plants can't put on sunscreen or find shade, so how do they avoid getting a gnarly sunburn?

Sci-fi technology is often more fiction than science, but it turns out there are actually some real-world labs that are working on developing force fields!

Today, we’re going to wrap up our discussion of economic policy by looking at government regulation. We're going to talk about the government's goals for the U.S. economy and the policies it employs to achieve those goals. Ever since the...

Should I refrigerate my eggs or keep them out on the counter? This depends on where you live, and what egg practices your country follows.

This Amoeba Sisters video introduces science lab safety guidelines with memorable illustrations and an accompanying handout listed under "safety". This video includes the discussion of proper lab attire, importance of proper disposal of...

About the importance of the National Parks Foundation.

When you think about it, your eyebrows are a little strange! But they're also really important! From protecting your eyes to helping others know how you feel, those little bits of hair in the middle of your face have some big jobs!

In the South Pacific, there is a rare tree so rich in metal that its sap runs blue.

In this video Paul Andersen explains how land is developed for human use. Urbanization has occurred through the last century as people have moved to cities in large numbers. Transportation and the arrival of the car have led to urban...

Indigenous communities have looked after their ancestral forests for millennia, cultivating immense amounts of knowledge on how to protect, nourish and heal these vital environments. Today, 470 million Indigenous people care for and...

Organisms have evolved many clever forms of armor so that they can be ready for whatever nature throws at them. And us flimsy humans can learn to enhance our armor by taking inspiration from some of these creatures, and not necessarily...

Silence is a rare commodity these days. There's traffic, construction, air-conditioning, your neighbor's lawnmower ... and all this unwanted sound can have a surprising impact on your health, says noise researcher Mathias Basner....

Growing up in the public eye, multi-hyphenate creator Bryce Dallas Howard experienced the familiar pressure to share her life with the world on social media. But with her mother's steadfast guidance, Howard learned to set personal...