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Sylvain Koenig from the University of Lausanne (Switzerland) asks

Why would one person when he returns from travel at the speed of light have aged differently than...

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 Noe asks

Which would hit a baseball further - a wooden bat or a aluminum bat? Why??

Nathaniel P. Luga from Cebu City asks

What chemical or chemicals that can desolve a strong concrete structure, and what is its mixture...

Ryan from Maryland asks

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

Markovic Ljiljana asks

When and how was the kaleidoscope made?

Derrick Smith from Jacksonville asks

In science fiction it is common to see P-P fusion, but my reading seems to indicate it is...

justine van der Werf from Tiaro asks

I have read that when oxygen is condensed to a liquid state, or indeed to a solid state it becomes...

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)...

Kyra Nabeta asks

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

David Graveline asks

What are the most recent theories about what existed before our big bang? Have there been one or...

Donald from Halifax asks

If neutrinos have mass, as now seems to be the case, they cannot travel at the speed of light …...

Trevin H. from Rocklin asks

I would like to know the chemical compostion of the venom in a yellow jacket wasp sting, the dosage...

D. Andrew White from Toronto asks

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

Brandi asks

Can air in the pleural cavity cause the lungs to expand more fully than they normally would?

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...

Marlene Caissie asks

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

Loubelle I. Depita from Koronadal City, South Cotabato, Philippines asks

Why are egg & milk used as antidotes for heavy metal poisoning and what other household remedies...

Intruder from Singapore asks

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

Ian Hancock from Calgary asks

In Chemistry today, we learned that when HCl is ionized in water, the H2O becomes H3O+, because of...

Terra from Ontario asks

How does sugar conserve food?

Brooke from the Internet asks

How do you find the solubility of a substance?

Mark Seymour asks

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

jose from miramar asks

Does fabric softener affect drying time of towels?

David Critch asks

My grade 10 biology teacher tells us that blood comes in different shades of red (dimmer and...

Citre asks

What kind of weather is on Mercury and Saturn? Does it rain or snow on these planets?

Lisa from London asks

When does each organ system of the human body reach full maturity?

Alexa Clay asks

How do scientists modify a virus so that it can be beneficial to a host cell? For example, during a...

peel from the Internet asks

What would happen if the nucleus of an atom contained too many or too few neutrons, or even none? ...

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...

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...

Jerry E. Allen asks

Is it possible to freeze water in a vacuum? Is there a chart that shows water temperature vs....

Furqan from Lahore asks

Do bends in a wire affect its electrical resistance ?

Karl-Alexander berg brisebois from Dunham asks

Heisenberg's uncertainty principle tells you that the mass of a particle multiplied by the...

Garry McKay from Melbourne asks

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

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...

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...

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...

David Keirsey asks

How did neutrinos get to be objects of such low energy? Neutrinos are supposed to have been...

Chris asks

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