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Multimedia

Format:
Quiz

An Elemental Quiz

How well do you know your way around the periodic table? Can you tell a noble gas from neptunium? In this quiz, test your knowledge of some chemistry basics, history, and trivia, including the quest to create new, superheavy elements on the periodic table.

Published: September 1, 2006

An Elemental Quiz

Test your knowledge of chemistry basics and trivia.
- 09/01/2006
- Multimedia
Text

Format:
Article

Acid Oceans Imperil Marine Life

Over a century of burning fossil fuels hasn't just changed the atmosphere, it has fundamentally altered ocean chemistry, which is threatening the foundations of marine ecosystems around the world.

Published: February 13, 2014

Acid Oceans Imperil Marine Life

Burning fossil fuels hasn't just changed the atmosphere, it has fundamentally altered ocean chemistry.
- 02/13/2014
- Text
Multimedia

Format:
Interactive

The Science of Fire

Combustion makes fireworks explode, matches catch fire, and candles burn. In this interactive, learn how a fire ignites, how chemical reactions rearrange the molecules of burning material, and what a flame is made of.

Published: January 1, 2002

The Science of Fire

Explore the basics of combustion and learn the physics and chemistry of burning in this virtual laboratory.
- 01/01/2002
- Multimedia
Multimedia

Format:
Interactive

Reaching Ultra-Low Temperatures

Pioneers in the quest to reach absolute zero relied on a technique known as the "cascade" process. By repeating a certain sequence that involved the cooling, compression, and evaporation of various liquids and gases, scientists approached ever closer to absolute zero, the lowest possible temperature. In this interactive, undertake your own three-step cascade and see if you can choose the right combination of gases to liquefy oxygen.

Published: January 8, 2008

Reaching Ultra-Low Temperatures

In our virtual chemistry lab, use the "cascade" process to achieve dramatically lower temperatures.
- 01/08/2008
- Multimedia
Text

Format:
Article

Making Chemicals Naturally

The field of green chemistry is all about designing products that are safer, more energy-efficient, and more cost-effective to produce. In this opinion piece, chemist John Warner argues that in order to advance the field we need to start by improving the way we educate the next generation of chemists.

Published: April 12, 2012

Making Chemicals Naturally

A pioneer in the field of green chemistry explains how copying Nature's methods to make chemicals is safer and cheaper.
- 04/12/2012
- Text
Audio

Format:
Audio Story

Asking Big Questions

In this excerpt from a 2002 commencement address at Oberlin College, the late cancer researcher Judah Folkman describes how he learned to think outside the box when he was in high school. Listen in.

Published: July 1, 2008

Asking Big Questions

Cancer researcher Judah Folkman describes an unforgettable lesson he learned from a high school chemistry teacher.
- 07/01/2008
- Audio
Multimedia

Format:
Interactive

Percy Julian Speaks

When Percy Julian lectured on chemistry or spoke about his scientific career, he put on, as one friend noted, "a grand show." Hear the showmanship for yourself in audio excerpts from one of Julian's most notable speeches, which he delivered at Indiana University in the mid-1960s, when he was in the limelight as one of the country's most accomplished African-American scientists and businessmen.

Published: February 6, 2007

Percy Julian Speaks

Hear the renowned chemist Percy Julian himself in these audio excerpts from a 1965 speech.
- 02/06/2007
- Multimedia
Text

Format:
Article

Barriers for Black Scientists

With the airing of "Forgotten Genius," the definitive account of the life of African-American chemist Percy Julian to date, it seems like an opportune moment to ask to what degree the racism Julian endured still holds sway in the scientific world, 32 years after his death. To what extent does the color of one's skin affect one's advancement—or lack thereof—in the sciences? And do we still need Percy Julian's example, marked by singular resolve, self-confidence, and ingenuity, to inspire young African-Americans to sidestep or squeeze through such barriers?

Published: February 6, 2007

Barriers for Black Scientists

Do racial barriers still exist for African-Americans in science, as they did in chemist Percy Julian's time?
- 02/06/2007
- Text
Multimedia

Format:
Slide Show

Medieval Stained Glass Science

Glassmaking dates back at least as far as the 16th century B.C. In this early epoch, the ancient Assyrians recorded the basic recipe for glass on clay tablets. But craftsmen of the Middle Ages raised the practice to a high art in the era of Gothic cathedral building (A.D. 1150-1500) and developed techniques still used by glassmakers today. In this slide show, see stunning examples of stained glass artistry, and learn about the chemistry behind it.

Published: August 19, 2010

Medieval Stained Glass Science

How did craftsmen of the Middle Ages make stained glass windows using little more than sand, wood, and fire?
- 08/19/2010
- Multimedia
Multimedia

Format:
Interactive

Radiocarbon Dating

Archeologists use various methods to date objects. Inscriptions, distinctive markings, and historical documents can all offer clues to an artifact's age. And if the artifact is organic—like wood or bone—researchers can turn to a method called radiocarbon dating. In this interactive, learn how radiocarbon dating works, what it takes to determine a date in the lab, and why it's challenging to pinpoint a date precisely.

Published: November 18, 2008

Radiocarbon Dating

What is carbon-14 anyway, and how can it reveal the date of an ancient artifact?
- 11/18/2008
- Multimedia
Multimedia

Format:
Interactive

Clickable Fuel Cell Car

In this interactive, check out a typical fuel cell prototype car, from its fuel cell stacks to its ultracapacitor, a kind of supplementary power source. The limited-production vehicle seen in this feature is a Honda 2005 FCX, which is typical of the kinds of hydrogen fuel cell cars that some major automakers are now researching and developing.

Published: July 1, 2005

Clickable Fuel Cell Car

Take a look inside a prototype hydrogen fuel cell car and see what makes it go.
- 07/01/2005
- Multimedia
Audio

Format:
Audio Story

The Dangers of Nanotech

In the growing field of nanotechnology, engineers are creating countless new microscopic materials. They're used in thousands of consumer goods, from cell phones to cosmetics and sunscreen. But how safe are they? Andrew Maynard is a physicist and director of the Risk Science Center at the University of Michigan. We talked to him about the potential dangers of nanotech.

Published: January 13, 2011

The Dangers of Nanotech

Nanomaterials are used in consumer goods from cell phones to sunscreen. But how safe are they?
- 01/13/2011
- Audio