Hair can be so many different colors, but why do so many adults have gray hair?

Lawrence Krauss is a theoretical physicist and cosmologist.

Nemat Shafik is the director of the London School of Economics and Political Science (LSE).

Professor Rodney Fitch founded his design consultancy, Fitch, now owned by WPP, in 1972. He exited the consultancy at the end of 2009 and worked in higher education and as an independent advisor, consultant and non-executive to a broad...

In this Design Squad Nation animation, hosts Judy and Adam describe the steps necessary to perform, and the physics behind the most popular skateboarding trick of all time — the Ollie. For more videos, activities and games visit...

This Design Squad Nation animation shows how Mesmer tubes work. Mesmer tubes use a high voltage electric current to hit Xenon gas molecules, knocking their electrons loose and creating various paths for the electric current to flow. When...

This Design Squad Nation animation shows how you can make your own wormery in order to create nutrient-rich and natural worm tea for your garden. For more videos, activities and games visit pbskids.org/designsquad

Alcohol Dehydrogenase: Physiology, Biochemistry, and Mechanism

Howcast - More than 6 million Americans age 55 and older have attended a free lunch investment seminar. But most of these so-called seminars are actually sales presentations, where the attendees are often pressured into making unsuitable...

This is the third of three parts of the seminar 'Middle class recruits to Communism in the 1930s', featuring Lord Denis Healey, Lord Peter Hennessy, Professor Nicholas Deakin, Juliet Gardiner and Professor Sir Roderick Floud FBA....

👉 Learn how to solve rational equations. A rational expression is an expression in the form of a fraction where the numerator and/or the denominator are/is an algebraic expression. There are many ways to solve rational expressions, one...

Ikea has teamed up with the United Nations High Commissioner for Refugees to create more durable shelters for refugees. The structures consist of four walls and are roughly twice the size of current temporary dwellings. Measuring about...

Se muestran seis imágenes diferentes en la pantalla, tres de ellas refractan la luz… ¿cuáles son?
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Athene Donald defines the different kinds of polymers and explains their properties.

The historian explains how the discovery of electricity propelled Victorian science and shaped our world as we know it today.

"Jeff Gomez, CEO of Starlight Runner Entertainment, is the world's leading expert at expanding entertainment properties, premium brands, and socio-political themes into highly successful transmedia narratives and...

Marcus Stallworth is the Owner of Stallworth Counseling Services. His role is to work with the diverse population, do individual counseling related to the Child Welfare system. He added a dynamic for fathers, and created a parent...

Marcus Stallworth is the Owner of Stallworth Counseling Services. His role is to work with the diverse population, do individual counseling related to the Child Welfare system. He added a dynamic for fathers, and created a parent...

Supporters of transgender rights protest at the Guardian/Observer offices Subscribe to the Guardian HEREref='http://bitly.com/UvkFpD' target='_blank' rel='nofollow'>HERE A group of supporters and activists for the rights of...

4 steps to go from nervous wreck to networking master. - This crash course in communication will help you turn an opportunity into a real outcome. - There are 4 progressive stages to networking: Ask curious questions, listen and probe...

The circus was one of the great spectacles of late-nineteenth-century Paris, combining extraordinary acrobatic feats, amusing trained animals, and outlandish clowns. This chaotic and colorful world attracted many artists including Henri...

Vote in Tate's new prize for digital talent The IK Prize celebrates creative talent in the digital industry. An expert jury has shortlisted four ideas that explore art differently, ranging from robots roaming the galleries, to...

Vote in Tate's new prize for digital talent The IK Prize celebrates creative talent in the digital industry. An expert jury has shortlisted four ideas that explore art differently, ranging from robots roaming the galleries, to...

Tate's curators introduce the new displays at Tate Britain, from 1540 to the present. This week, David Brown explores the work of JMW Turner. This room is part of the display: Walk through British Art BP Displays sponsored by BP