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George Murphy asks

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

Hongyi Li asks

Does antimatter's gravity have the same properties ordinary matter?

YIanni Mitropoulos from Melbourne asks

If a sound is played to a person over a period of time, is there a way to work out (or to estimate)...

Marlene Caissie asks

I heard there was a woman named Rosy involved in the discovery of the DNA double helix. Who was she...

Peter Gensch from Auckland, New Zealand asks

Is there an effective and affordable way to kill weeds on an organic basis? (i.e. vinegar?)

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...

Rod from canterbury asks

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

Darrin asks

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

Morten Aasbak from Bergen, Norway asks

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

Harriet Quaide from Birmingham asks

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

Benjamin Raja from Singapore asks

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

Yevgeniy Perev from Staten Island asks

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

Leo Capistrano asks

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

Ryan from Maryland asks

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

Grade One, Chesterville Public School from Chesterville, Ontario asks

What do you feed baby praying mantises? We found a mother praying mantis who laid an egg sack on a...

Robert Steinhaus from Castro Valley asks

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

jose from miramar asks

Does fabric softener affect drying time of towels?

Tyler Salo asks

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

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...

Ron Belmont asks

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

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...

Gaston Fournier asks

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

Chris asks

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

Margaret Moore asks

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

Benoît Mailhot asks

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

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...

bahar from iran asks

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

Gregg Echols from Phoenix asks

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

Charcoal from the Internet asks

What makes classifying dogs in breeds different from classifying humans in races? I thought that...

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...

David from Ottawa asks

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

Jonas Malmgren asks

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

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...

Ethan Diener asks

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

George Chronis from Toronto asks

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

Marie from Rochester asks

My whole family plays hockey. We have frequently discussed how long of a shift should be and with...

Aliahs Ahmadzai from Maple Ridge, BC asks

When you get a lighter and get a piece of metal and you turn on the lighter and put it over the...

Erin Harris asks

How would Giant Pandas being killed off affect my life?

Akin from Winnipeg asks

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

Kelly asks

What is the structure of chicken bone?