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Mark Seymour asks

Why are there no penguins in the Arctic, or anywhere in the Northern Hemisphere?

Marcel Leone asks

Is gravity considered to be one of the forms of energy such as electricity, heat, light,...

D. Andrew White from Toronto asks

Do different isotopes vary slightly in chemical properties? Or are they the same? i.e. are the...

Carla Becker from Dallas asks

If we are making a perfume and we pour alcohol on an orange peel; why would the smell increase the...

James Hope from Gloucester asks

I have a physics paper here (don't worry i am not asking you for the answers!) that says each U-235...

Chris asks

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

Hongyi Li asks

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

Furqan from Lahore asks

Do bends in a wire affect its electrical resistance ?

Garry McKay from Melbourne asks

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

Ron Belmont asks

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

David from Ottawa asks

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

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...

Kyra Nabeta asks

In dealing with bacterial resistance, should doctors use the strongest antibiotics now to kill off...

Mouabbi Rami from Athens asks

Why do most industrial LASER diodes emit pulsing light beams and not continuous ones? And what is...

Joaquin Cornejo from Los Angeles asks

Why do dry cell batteries (rechargeable) need to be fully drained before they can be recharged?

Intruder from Singapore asks

How does a lightstick work, and what are the chemicals involved?

George Donati from Andradas-MG- Brazil asks

When you squeeze out a piece of orange-peel on a flame, it catches fire violently. Why? What is...

Ethan Diener asks

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

Morten Aasbak from Bergen, Norway asks

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

Marlene Caissie asks

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

Harriet Quaide from Birmingham asks

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

George Chronis from Toronto asks

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

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)...

Stephen Leece from London asks

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

Marin from the Internet asks

Is it possible to create plasma using two high voltage electrodes , cathode and anode. Would air...

Edward Driedger asks

How do touch lamps work? If one person touches the touch pad and someone else taps his other hand,...

Peter Gensch from Auckland, New Zealand asks

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

Mike Ochman from Whitby asks

Where on earth is the gas neon found? Is it common? Rare? In what form is it usually found (as a...

Brooke from the Internet asks

How do you find the solubility of a substance?

Benoît Mailhot asks

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

Gregg Echols from Phoenix asks

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

Ed from Port Orchard, Washington, USA asks

Do magnets become less massive over time? It requires energy to hold a magnet on the refigerator...

Ryan from Maryland asks

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

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...

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...

Ross Richardson from Battle Creek, MI asks

How long does it take for alcohol to be detected through the skin after your first drink? Is there...

Paul from Romania asks

What i don't understand is why the intensity of the electric field is 0 inside a charged (empty on...

Marie from Rochester asks

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

Anthony from Windsor, Ontario asks

Are there any species that have evolved, but still have their ancestors co existing with them on...

Nora from the Internet asks

When does a scientist sign on to try and find a cure or cause of an illness or a disease, meaning...