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Chemistry

Jessie Meyers from Sydney asks,

Why does lemon prevent the browning of apples? When browning of apples is caused by a reaction with...

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Apples (and other fruits and vegetables) have within their cells enzymes and...

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Chemistry

Michael Doggett from Kingston, ONTARIO, CANADA asks,

We have an older pop machine at work with canned soft drinks. Sometimes, when a pop is opened that...

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The problem with Michael's explanation is that there's no obvious reason for...

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Physics

Lee Riffee from the Internet asks,

With all that the U.S. military is doing by developing laser weapons as an anti-missile defense, I...

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Daryl Crozier, a Canadian physicist at Simon Fraser University who works on...

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Biology

Andrea Rose from the Internet asks,

Why do brown or blue eyes turn green in young adulthood?

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Maybe what you are observing has something to do with the ambient light...

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