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Is there really such a thing as a “green flash” at sunset and sunrise?

Is there really such a thing as a “green flash” at sunset and sunrise?

- asks Jessie from New York

By Karina Hamalainen | Posted December 10, 2007

Double Sunrise

Double Sunrise

A new theory proposes Earth-like planets with double the star power.

By Monica Heger | Posted December 5, 2007

Why is it taking Iran so long to make a nuclear weapon? Didn’t it only take the US four years to invent them?

Why is it taking Iran so long to make a nuclear weapon? Didn’t it only take the US four years to invent them?

- asks Herman Blount of Birmingham, AL

By Stuart Fox | Posted November 20, 2007

A Good Microbe is Hard to Kill

A Good Microbe is Hard to Kill

NASA’s “clean rooms” are home to a variety of extreme bacteria.

By Jeremy Hsu | Posted November 9, 2007

How do bikes balance when we ride them?

How do bikes balance when we ride them?

- asks Ariel from Vermont

By Molika Ashford | Posted November 5, 2007

More than a Print

More than a Print

Researchers think drug use can be detected in fingerprints.

By Rachele Cooper | Posted October 12, 2007

Gridlock on the Grid

Gridlock on the Grid

As the national power grid ages, we become more vulnerable to blackouts.

By Jeremy Hsu | Posted August 29, 2007

Quantum Questions

Quantum Questions

Andrew Kent’s New York University physics lab delves into the mysterious world of quantum computing.

By Andrea Anderson | Posted August 22, 2007

Winging It

Winging It

Can physics solve the mystery of avian flight?

By Erica Westly | Posted July 18, 2007

How could the universe expand faster than the speed of light? That seems impossible!

How could the universe expand faster than the speed of light? That seems impossible!

- asks Paul

By Joshua J Romero | Posted July 9, 2007

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