As the global population increases, the supply of water doesn't. Explore how water is used, conserved and distributed, and why devastating water shortages threaten some communities. Earth Science - Earth's Resources - Learning Points....

Ice cores taken from deep within the Earth's polar regions hold a hidden secret: the historical record of the Earth's climate. Earth Science - Human Impacts - Learning Points. Evidence of natural climate changes can be found in...

From volcanic eruptions to massive earthquakes to tidal waves, Earth's tectonic plates can be responsible for catastrophic natural disasters. Earth Science - Geology - Learning Points. The rising and falling of intense heat deep inside...

A fluorescent substance is one that absorbs light at one wavelength and re-emits the energy as light at another wavelength, usually longer, a phenomenon called fluorescence. A Twig Science Glossary Film. Key scientific terms defined in...

Brenda Wineapple, author of The Impeachers: The Trial of Andrew Johnson and the Dream of a Just Nation, explains her motivation for writing about Andrew Johnson's impeachment. Despite being the first U.S. president to be impeached,...

In a remote corner of Siberia, climate change is having a visible impact. Vast expanses of soil, frozen for tens of thousands of years has started to thaw; and the process could dramatically increase the rate of global warming. The...

Histrionic personality disorder falls into the cluster B grouping of personality disorders. Cluster B refers to the group of personality disorders that share the characteristics of being dramatic, emotional or erratic....

We examine the introductory section of Beethoven’s final Piano Sonata, op.111. Having given some background context, this video takes us through the fascinating harmony and key movement, and references this to other aspects of this...

BONUS VIDEO: The Microcosmos Microscope

Can a close look at the universe give us solutions to problems too difficult even for a planet-sized computer to solve? Physicist Stephen Jordan considers this question and more in our latest video.

What is harmonic rhythm and what does it tell you about chord changes during a chord progression? Harmonic rhythm is all about when and how often chords change in a piece. Sometimes the harmonic rhythm is slow; at other times it moves...

SOUTH AFRICA - NOVEMBER 2016: DRAMATIC footage shows two monitor lizards locked in a vicious battle, deep in the heart of the Greater Kruger National Park in South Africa. Filmed by renowned wildlife ranger Rob Vamplew, the two...

The heat from a camera flash makes a puff of smoke from a black surface. Parts Needed: 1 Bright camera flash 1 Newspaper

Don't Make These Two Grammar Mistakes on IELTS! - IELTS Energy Podcast Bonus

In this video, Noor Mastura recounts her experience as a passenger on a Singapore Airlines flight that caught fire shortly after takeoff.<br/>
Airline Safety part 1/5

Pyston, created originally at Dropbox, aims to speed up execution of Python programs with various acceleration techniques like just-in-time compilation ("JITting"). In this video we demonstrate Pyston's speedups -- still modest, but...

Clouds manifest moisture condensed in the air. In this program they are appreciated and pondered. Clouds give clues to wind direction, humidity levels, weather patterns, and they just make pretty sights. We look at the basic type of...

A contemporary dance to Say Something by A Great Big World.

One hour from New York City, where the suburbs of New Jersey give way to farms, a team of scientists are drilling for ancient rocks on the edge of a cornfield. The rocks hold clues about what the earth was like about 201 million years...

Do you speak in a monotone way? This can bore people and prevent connection before it even starts. Find out how to stretch certain words to show your emotion and be more animated when you want to in this episode

What makes a diminished 7th chord and how do we use it best? In this music theory lesson you will discover exactly what a diminished 7th chord is, how to construct a diminished 7th, and how to locate a diminished 7th in the context of a...

In this video, we explore the fascinating world of deimatic behavior in animals. Deimatic behavior involves the use of surprise and dramatic displays, such as eyespots, to startle and deter predators. This video provides insights into...

You'll get started quickly as you complete this tutorial to alter an image and make it more dramatic in Photoshop.

In this episode of composing for the piano we talk about writing in a late Romantic style. We take the music matters theme and arrange it into a late Romantic style, discussing music composition techniques and tips when composing for the...