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Sara asks

What happens to a compass when it is held exactly on magnetic north? Does it just spin?

Gareth Cook from St. John's, Newfoundland asks

If, as we know, Carbon dioxide - a potent greenhouse gas - is heavier than air,  why is it a...

D. Tolenaar asks

How does air conditioning work?

Helina from Shakespeare asks

What two liquids combine that gives you a solid instantly?

Laura from Earlton asks

How come on a warm clear day clouds form at night?

Larry King asks

How can you measure the energy of an ocean wave? Is there a reasonably simple equation that...

Mike Starry from Fresno, CA asks

How and when will hydrogen fuel cells be used to provide electricity for my home? What would it...

Jennifer Easterly from Sydney, NS asks

Can you contract diseases if someone's saliva gets in your eyes? A really disgusting thing happened...

Yogesh Patil asks

Can you provide a detailed structure and working of the magnetron tube used in microwave ovens?

Anonymous from the Internet asks

Why does water not sink down through the ocean floor?

Serine from Singapore asks

Are there any developments in the research on elastin in coronary heart disease? Is there any way...

Jesse Fitzpatrick asks

What is the highest and lowest canadian recorded air temperature?

Raymond J. Sucgang from Manila, Philippines asks

Hi, Could you please clarify: Does an increase in precision mean a decrease in accuracy? Does a...

Edmund Mah asks

Are there special awards for Canadian scientists? Canadian science greats like Sir Frederick...

Tony Sousa asks

How do hot packs work? My wife purchased a reusable hot pack for keeping our baby warm when we go...

Chelsea Imm from Glandorf, OH asks

Can you please tell me what the basic preservatives are in the following breads: white, wheat,...

Denise from San Jose asks

Is it possible to do a blood test (or some other type of tissue testing) to determine someone's...

Kathryn H. asks

Are there any conflicting scientific views about the ozone 'hole' over the Antarctic?

Michel lamontagne from edmonton asks

I am wondering how water/air changes it's molecular structure so that when air is heated it...

Gavin Dune from Australia asks

How does the sensory memory help us to hear, read and understand whole sentences? For example. when...

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

Why does nutrasweet or aspartame loses its effectiveness in cooking or in processes requiring...

Michael Chen from Calgary asks

Is there any evidence that the Green House Effect is not caused by industral gas emissions?

darioush asks

What is thought? Is it matter or energy? And how does the brain create a thought?

Ken Marshall from Sault Ste Marie asks

Since trees hold CO2 and produce oxygen, why would it not be beneficial to have marginal farmland...

Chandler robinson asks

What is Tritium?

Yevgeniy Perev from Staten Island asks

How much energy did the highest energy neutrino detected so far have?

Rowland Craig from San Antonio, Texas asks

What is the volume of breathable air on the earth? Perhaps as one atmosphere?

DeeCee from Indianapolis asks

How does vacuum insulation work and can an R Value be assigned to it? Does the depth of the vacuum...

Laura from Toronto asks

Why does lake water change temperature at a slower rate than the ground?

Josh Blake from Mississauga, Ontario asks

I am really interested in chemistry and I was wondering where I would be able to purchase some of...

Rosanne Li from the Internet asks

I would like to know how the brain functions generally while sleeping, and what part electricity...

Jason from Montreal asks

What's the percentage of male and female meteorologists in Canada?

collin from fort walton beach, fl asks

I just recently did an experiment using paper airplanes with different wing types (swept back at...

Mike Delie from Menomonie asks

I'm doing a senior project on recycling, and I'm curious if it uses more energy to mine and convert...

Sara asks

Is invisiblilty possible? Is it possible to alter an object so it can't be seen? Could people's...

Vinita from Edison asks

What are the main chemical components in food? How do you determine the total protein, lipid,...

Marcos Chimenti from Rio de Janeiro asks

Does air act as an insulator against lightning on flying airplanes? I know the aluminum case is...

Asma from the Internet asks

Should scientists have any moral responsibility in science? For example, do scientists consider the...

Lacci from Withernsea, Yorkshire, England asks

Many people say there are 5 senses in the body but I am arguing with my mum here that there are...

bree kissner from kingsville asks

why does soda pop fizz when it is poured over ice