If you’ve ever wondered how you can give a TED Talk, you’re not alone. TED believes that ideas change everything — and that they can come from unexpected places. So, we issued an open call to anyone in the UK in search of the biggest,...

What's cooler: A vaccine for one of the deadliest bacterial infections around or a holodeck? Well, this week we got a step closer to BOTH!

There's no single formula for a great talk, but there is a secret ingredient that all the best ones have in common. TED curator Chris Anderson shares this secret -- along with four ways to make it work for you. Do you have what it takes...

As many as 3,000 languages could disappear within the next 80 years, all but silencing entire cultures. In this quick talk, language activist Daniel Bögre Udell shows how people around the world are finding new ways to revive ancestral...

Sherwin Nuland, a surgeon and a writer, meditates on the idea of hope -- the desire to become our better selves and make a better world. It's a thoughtful 12 minutes that will help you focus on the road ahead.

For as long as we've had language, some people have tried to control it. And some of the most frequent targets of this communication regulation are the ums, ers, and likes that pepper our conversations. These linguistic fillers occur...

You don't have to fight feral ghouls to be familiar with the clicking sound of a geiger counter, but what exactly makes these radiation detecting devices click?

Language is complex, and when abstract or nuanced concepts get lost in translation, the consequences may be catastrophic. Given the complexities of language and cultural exchange, how do these epic miscommunications not happen all the...

Mr. Andersen explains how sound waves are created and perceived. A brief discussion of pitch and loudness are included. A generated sound of varying pitches is also included.

It can be hard sometimes, when speaking, to remember all of the grammatical rules that guide us when we're writing. When is it right to say the dog and mec and when should it be the dog and I? Does it even matter? Andreea S. Calude dives...

We learn a lot about our surroundings thanks to sound. But... what is it exactly? Sound, that is. What is sound? And how does it travel? And what is this Doppler Effect that we've heard so much about? In this episode of Crash Course...

Y’know lots of people say you shouldn’t use, like...filler words, but uh, should you really like, stop using them?

The sky is blue, but according to whom? Could the rules of our language affect the way we perceive color?

How do you get what you want, using just your words? Aristotle set out to answer exactly that question over two thousand years ago with a treatise on rhetoric. Camille A. Langston describes the fundamentals of deliberative rhetoric and...

Learn 5 Tips to Improve Your Public Speaking to take you from good to great public speaking. Great speakers make it feel like an event, like something special is happening. And they do it by raising their standards in 5 areas.

Learn how to give an impromptu speech with this killer framework that will make you sound much more prepared than you are! If you learn how to speak impromptu, it will help you stand out in almost any professional crowd.

Howcast - Learn how to position floor speakers from audio expert Jon Zimmer in this Howcast video.

Howcast - Learn how to set up a home theater from audio expert Jon Zimmer in this Howcast video.

Howcast - Learn the pros and cons of freestanding speakers vs. in-wall or in-ceiling speakers from audio expert Jon Zimmer in this Howcast video.

Howcast - Learn how to evaluate different speakers from audio expert Jon Zimmer in this Howcast video.

Howcast - Learn how to match speakers to your music from expert Jon Zimmer in this Howcast video.

Howcast - Learn how to choose the right speakers for a room from audio expert Jon Zimmer in this Howcast video.

Howcast - Learn how to deal with distorted audio from car speakers in this Howcast car stereo video with expert Movin' On.

Howcast - Learn everything you need to know about car speakers and their effect on car audio in this Howcast car stereo video with expert Movin' On.