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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?

Gabriel from Winnipeg, MB asks

What is the distance from the sun for each of the elements in the periodic table where they would...

Anthony from Windsor, Ontario asks

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

Fred Bucheit asks

How does mass shifting affect Earth's rotation? Could melting of polar icecaps cause a change in...

bahar from iran asks

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

Stanley Jeffs from Cortona asks

I have been reading Feynman and what he says seems to make sense to me, in particular:photons are...

Eric Cashmore asks

What is the name of the most recent planet discovered, and where is it?

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...

Jesse from Ottawa, Ontario asks

Why do ceramic magnets lose their strength in extremely cold temperatures like dry ice?

Mike from Brussels asks

I have been doing an experiment in school and I don't understand why the following happens. When we...

Mohsen Omrani from Tehran, Iran asks

I am interested in Computational NeuroScience, particularly in Colour Vision, Land's Effect, and...

Jen Collard from Brockville asks

Light cannot escape from a black hole, because of the black hole's mass. If this is true, then...

Yevgeniy Perev from Staten Island asks

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

David Keirsey asks

What are the quantum numbers that are involved in the distinction between matter and antimatter? I...

Benjamin Raja from Singapore asks

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

Harry Pritchard asks

How can I find out whether it takes more effort (work by pump) to increase the air pressure in a...

Marc Doucet from Bathurst, New Brunswick asks

Are the pores of the cell membrane composed of protein molecules or are they simply holes in the...

Erin Harris asks

How would Giant Pandas being killed off affect my life?

Jessica Reynolds asks

Since there are no molecules within the vacuum of space to allow heat transfer, how can the air...

Kevin Pagn from Vancouver asks

Is a nerve impulse considered an electric current since it induces a magnetic field?

Akin from Winnipeg asks

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

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...

Serge Bellemare from Boston, MA, U.S.A. asks

Where in the universe are we? We seem to know the dimensions of the Universe; so does it have the...

Stevi asks

How does shaking seeds in a jar lined with sandpaper affect the way they germinate? We shook lima...

James Hope from Gloucester asks

I recently read a book on the big bang, and it said that protons and neutrons are made up of 3...

Brad McCarthy from Bridgewater NS asks

In reusable heat packs, the crystalization of sodium acetate is exothermic. This process can be...

Roman asks

How do scientists detect nutrinos when they have no mass and no charge?

sabiha from lahore, pakistan asks

There is a controversy among my collegues that during agarose gel electrophoresis the band that...

Pat asks

If the earth stopped revolving would humans weigh less or more? Would there still be gravity on...

Dane Haas from Flesherton asks

What are the most recent solar storms and will they effect the Earth's atmosphere?

Andy (Dionne) Setlow from Madison, Alabama, USA asks

I have long struggled to understand why the temperature of various wavelengths track so closely...

A. D. asks

I am interested in the age-old debate on whether a person gets wetter by walking in the rain or by...

Terry Hare from Oshawa asks

Why are most scallops white and some are yellowish brown to almost an orange color?

Nedim from Atlanta asks

For a long time I have noticed that during the day or any kind of brighter light my eyes are bright...

jacqui from Stockleigh Pomeroy asks

Explain recessive gene disease and what happens to the DNA to cause parents to be carriers.

sarah gubbs from quebec asks

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

Harish from Scarborough, Ontario asks

I want to know if we inject cobra's venom into a rattlesnake and rattlesnake venom...

Karen from Ottawa asks

How old do turtles have to be to have turtle eggs? And do 2 turtles have to have different sex to...

Mridu from Toronto asks

Specific tissues are meant to perform specific functions. Is it possible to transfer different...