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Biology

Diana from Tucson asks,

How large is a human genome? What percentage of the DNA in the Human Genome actually codes for...

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According to an article in Read the answer...


Chemistry

D.D. from St.john's, NL asks,

Ethanol is the focus of many tax dollars these days. It seems to me that the burning of any...

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Whether you burn ethanol or gasoline you of course add CO2 to the...

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Physics

Patrick Tekeli from San Francisco asks,

I was browsing the Cornell University Astronomy web site and I read in an answer to a question...

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Perception of stars is fundamentally limited by two factors: the brightness...

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Biology

Richard Dinning from Mississauga asks,

What would happen, given the loss of polar ice and it's deleterious affect on polar bears, if we...

the answer

Polar bears would do wonderfully in the Antarctic.  They would,...

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