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Mary Phipps asks

Is calcium carbonate (ground limestone) biodegradable? Will it break down during composting? I want...

Barbara Pearson from Holly Springs, NC asks

I was reading a text which stated that scientists have used ice cores to calculate prehistoric CO2...

Eduardo from Pembroke Pines asks

Is it true that gas particles at higher altitudes are farther away from each other than at lower...

Cheryl from Chesapeake, VA asks

I teach moon phases to my third graders. On posters, in textbooks, and online, I have seen...

ALI from miami beach asks

1)What type salary does internal medicine make? 2)What kind of education is needed for internal...

Joel from Australia asks

What is the chemical makeup of an apple?

Sara asks

What is fire composed of? Could you have liquid fire, or solid fire?

Melodia from Montreal asks

What is the main problem faced by scientists studying the use of nuclear fusion as a source of...

Max from Toronto asks

How many water and wastewater treatment plants in Canada are using chlorine gas for disinfection?

Brian from Jersey City asks

How are mountains created?

Charles Kern from Detroit Lakes, Michigan asks

Is there a high permeability magnetic shield that does not have iron in it?

Mary Macmillan asks

How and when did the Great Barrier reef develop? Is it still developing today?

Sam asks

Can a 'stove' be made using methane gas produced by waste material?

Linda O\'Neill from Dartmouth asks

How can you define the pressure of 5 g. on a person? This would be done with the fingers. I am...

Nikki May from Erie asks

How does heated vinegar react with powdered milk to create the result of plastic like curds?

Mohammed Talha Khan asks

Why does water evaporate when it is left out in the open?

Alex Smith from Owen Sound asks

How can I make a simple flashlight?

jessi from San Francisco asks

I have more than one question: Does Coffee work better for females or males? Does Coffee work...

John Mitrosky from Scarborough asks

My son is doing a herptiles of ontario project and this a missing link question: Do you think...

Kelvin C from Markham, Ontario, Canada, North America asks

I was wondering, what solids or liquids can trap heat in very well, or at least maintain the...

Tracy Weddell from Bakersfield, CA asks

Do neutron stars evolve further? Charts of star evolution always show the neuton star as the last...

Guy from Vancouver asks

Why did Canada pull out of the ITER fusion project, and what, if any, research is Canada...

Kevin asks

How can I make a plastic object? I want to make a clear or translucent, thin cylinder that is...

Marsha Anisoquili (Many Ponies) Raymond from St. Petersburg, FL, USA asks

If oriental is eastern and occidental is western, what is northern and southern?

sabahat from lahore/pakistan asks

In our body fat is stored so we get fat. If we will eat only oil we will not get heart problem...

Davina asks

Can you damage your hands by cracking your knuckles?

Karla asks

What causes the bends?

Mike Tripple asks

What happens to the ice cubes in our freezer bucket. They get smaller even if they are a solid. Do...

Peter Baum asks

How can I measure how much liquid is in an apple, lettuce, a potato, and an orange?

Phil from Ottawa asks

Are there some materials that shrink faster that other materials in cold? If yes, which ones?

Edward Lotus from Wawa, Ontario asks

Is it a crime to prevent the birth of a malformed fetus? I strongly feel that we should terminate...

Rick Morrison from Sudbury On asks

What makes certain surfaces such as highway lane markings, reflective strips on clothing and...

Tony Young from Santiago, Dominican Republic asks

I have a problem with moisture in my apartment. I live in a Caribbean country and am not able to...

Ian Gordon from Exeter UK asks

Why are sounds so much louder downwind, even when the wind is light?

Neil Cannon asks

Is it possible to 'see' a thermal? As the thermal is invisible to the naked eye, is there some way...

Shauna from the Internet asks

How long can a vehicle typically run without oil or antifreeze before the engine seizes?

Amy L. asks

What makes the horizon glow pink and red?

D. Tolenaar asks

How does air conditioning work?

David from Blacksburg asks

Why does solar energy lose some of its strength when entering through the O-zone?

Sophie from Winnipeg asks

Why do street lights shut down, often, when we drive underneath them? Oftentimes, my boyfriend and...