Lee Riffee asks

With all that the U.S. military is doing by developing laser weapons as an anti-missile defense, I...

Jasmin from Brighton asks

Why are tanks (such as scuba diving tanks, for example) always designed in a cylindrical shape? In...

bruce marshall from Davie asks

In energy transformations, even on the subatomic level, is some energy always lost as thermal...

darren liew from Singapore asks

How many times a year can you see the eclipse of the moon???

M Anderson asks

If you could dig a hole from one side of the earth to the other passing though the core, what would...

Aaron Allen from Halifax, Nova Scotia asks

What are the top ten Canadian science discoveries?

Tracy asks

HELLO I have A VERY IMPORTANT EMAIL. THIS IS STRICTLY CONFEDENTIAL AND CONCERNS THE ENTIRE HISTORY...

Angie from New Tripoli, PA asks

What goes on during the change between isometric and isotonic in muscle cells? What does it look...

James Hope from Gloucester, UK asks

My dad was saying that radio waves from TV transmitter stations can burn you severely if you are...

Dean Jones from Saskatoon asks

Why do we not have a mouthwash that prevents plaque buildup and, hence, gum disease?

Matt from the Internet asks

Why are 6volt batteries bigger than 9volts, even though 6 volts are less than 9? And why are AA,...

Roman Tanisis from Surrey, BC asks

I have an FM transmitter for my iPod. I find that when my hand is within 5 centimetres proximity to...

Nick from Melbourne asks

I'm wondering if I have a tube filled with argon gas, or some other inert gas, and heat up a...

Ashis from Mumbai asks

I want to know how ascorbic acid (vitamin-c) is metabolised in the body of fishes.

Reatha Tillman from Ocean Pines, MD asks

A student gave me 4 pairs of different duck and goose feet. How can I preserve them? Do I dry them...

deepak from friendswood asks

Will sodium or ammonium nitrate react with hydrogen sulfide ? If yes, what are the expected...

Marc Baldwin from the Internet asks

In their book on the 'Mammals of Britain and Europe', MacDonald and Barrett state that Red Foxes...

Jordan Green from Toronto asks

Today a girl in my class asked the question "Can you save yourself from an elevator falling 10...

Pankhuri Kalra from Delhi asks

Is there any reaction which can take place without the exchange of heat with the surroundings or...

Joe from Atlanta, GA asks

Why are the water levels of the Atlantic and Pacific Oceans different at the Panama Canal if they...

Bethany Garrison from Summerville, SC asks

My mom and I are having an argument. She claims that the gene for blonde hair will be wiped out...

Dan Van Brunt from Thunder Bay asks

Recently a friend of mine took a picture of what he thought was a grasshopper out at his camp far...

Yevgeniy Perev from Staten Island asks

If we assume that Whitten's new Twistor String Theory is correct, with no real extra demensions,...

M.Shirley from Horam, E. Sussex, UK asks

ULUru is the aboriginal name for Ayer`s Rock, which was a sacred place for native Australian...

Richard L. Gibbens from Colorado asks

My question concerns the latest news about the Cosmological Constant. Has it now been established...

Sean Polreis from Saskatoon asks

Suppose a truck transporting birds is weighed. Will there be a difference in weight depending on...

Matt from the Internet asks

What is the chemical formula for air?

Semutblue from the Internet asks

Is there a liquid chemical that will glow when electricity is passed through it? What voltage would...

theo baker from santa barbara asks

I have heard somewhere that there is what could be described as a secondary brain in the large...

Manny from Kanata, Ontario asks

Does caffeine affect  boys and girls' blood pressure differently?

Mischa from Toronto asks

Black Holes, formed after the collapse of massive stars, are infinitely dense objects.Why is it...

Bryn Williams from Vancouver asks

If the telomeres of a cloned organism are smaller than a non-cloned organism, and therefore may...

Bobby from Oak Ridge asks

I would like to know what causes inverted icicles. I have a photo I've just taken if you need to...

Ken Hood from Batamans Bay, Australia asks

Can a normal late model petrol car engine be coverted to run on almost pure ethanol? How is this...

Jessica Hawthorn from Lac La Biche, Alberta, Canada asks

What experience and education should I get for a career in paleontology?

Darren Gough from Vancouver, BC asks

Have you ever hit the top of a glass juice bottle with your fist. It makes a very loud cracking...

Ernie Epp from Kenora, ON Canada asks

Regarding the behaviour of a high-voltage spark. I have a device which generates a pulse of ...

Gary from Birmingham asks

Why is the time of a day measured using 24 hours?

Jim Weaver from Lancaster, PA, USA asks

Since most dehumidifiers work on the principle of condensing on an aluminum coil, is there a...

Ed from Kyiv asks

Against the black plastic on my TV, dust looks white; when I wipe it off with a white tissue, dust...