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Ryan from Maryland asks

I'm doing a science experiment with magnets and was wondering, do magnets lose their strength over...

A.E. asks

Why do we have five fingers? My idea is that one of nature's themes is "having enough." It's like a...

Amanda from Calgary asks

I am interested in finding more information on how to detect the presence of arsenic in the foods...

Pierre Charbonneau, Eng. from Jonquière, Quebec, Canada asks

Is there actually a strobe light on the International Space Station? I saw in the sky a sequence of...

Margaret Moore asks

Can you tell me what the exact pH of the acid in our stomach?

Benjamin Raja from Singapore asks

At what speed does the world's slowest living thing travel? And what is the world's slowest living...

Ron Belmont asks

How do you calculate potential energy for an object which is sitting on the floor? PE=mgh, which...

Karan Rana from Atlanta asks

I am doing some research on microarrays. I wish to know if mRNA's also have open reading frames as...

Totoro asks

How do antiperspirant products work? Could you use one on your chest to prevent sweating?

Rod from canterbury asks

Is there any magnetic shielding material which is not itself attracted by a magnet?

Stephen Leece from London asks

I am currently researching how sugar (sucrose) reacts with various chemicals. I am particularly...

George Murphy asks

An article in the National Geographic magazine describes the Big Bang event as linear in form. Does...

Akin from Winnipeg asks

Why does HIV form resistance to ARV so quickly? HIV reproduces itself millions and millions of...

Garry McKay from Melbourne asks

I've a question about solublity, water, and cyclohexanone. Water has a certain solubility in...

Gaston Fournier asks

NASA has recently detected the presence of ice on the moon. Since the moon is surrounded by void...

bahar from iran asks

We want to know, when we burn NaCl, what happens to Cl?

Morten Aasbak from Bergen, Norway asks

I came across a "water powered clock", and it can supposedly generate power from water alone. My...

Jordan Duncan from Prince George, BC Canada asks

I need to know what happens to wood (softwoods, hardwoods and kiln dried woods) when they are...

Tridib Das from Guwahati, Assam, India asks

Just like 1 mole of water contains Avogadros number of molecules and has the same mass as that of...

eddie poirier from Orange City, Florida asks

I have always heard that distilled water is a poor conductor of electricity. Is this true and if...

Benoît Mailhot asks

Are light and matter the same thing? Can you get matter from light?

Furqan from Lahore asks

Do bends in a wire affect its electrical resistance ?

Kelly asks

What is the structure of chicken bone?

Tyler Salo asks

When rockets were sent to Jupiter, did scientists get any readings? Does Jupiter have a solid...

Chris asks

Can absolute zero (0 degrees Kelvin or -273.16 degrees Celsius) be registered on a thermometer,...

Erin Harris asks

How would Giant Pandas being killed off affect my life?

Yevgeniy Perev from Staten Island asks

When our galaxy will absorb the 2 Magellanic Clouds, that will produce a starburst. For how long...

Darrin asks

Why does an atom have neutrons and why does a specific atom have a limited amount of isotopes. For...

Leo Capistrano asks

How long would a single molecule of a radioactive element last? If the half-life of U-235 reduces...

Giovanni Cuevas from Bronx asks

How much does a person's head or skull grow every year? If I'm 16, how much would it grow until it...

David from Ottawa asks

I was wondering how I could test for things like heavy metals. How can I do that without paying for...

Gregg Echols from Phoenix asks

What are the temperatures reached at the focused point of a magnifying glass, when using the sun as...

Bertrand Xiao asks

Is there a better alternative that has yet to be discovered other than zinc to be used in a battery?

George Chronis from Toronto asks

I have a few questions regarding Space-Time that have always confused me. I would very much...

sarah gubbs from quebec asks

If I had two unlabelled bottles one containing dilute nitric acid and the other containing dilute...

Harriet Quaide from Birmingham asks

Is it possible to test for, and diagnose, mitochondrial disorders, after death? How? Can this be...

Ethan Diener asks

If body temperature is 98.6 degrees, why does 98.6 degree water feel hot when you place it on your...

Robert Steinhaus from Castro Valley asks

Can a fast breeder reactor like the famous Candu series of Canadian designed fast reactors be...

David Dexter from Mill Valley, CA, USA asks

This came up during a homeschool astronomy lesson: Why does the back of the Moon not have large...

Jonas Malmgren asks

Is the interstellar space between the galaxies completely empty? Not even a single star or a nebula?