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Nick from Toronto asks

Is it humanly possible to `whistle' or make a sound at a high frequency (similar to a dog whistle)...

John Mitrosky from Scarborough asks

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

Jonathan asks

Would you be able to help me out in any way to find material on Fluorine?

Amy L. asks

What makes the horizon glow pink and red?

Michel lamontagne from edmonton asks

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

Vinita from Edison asks

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

Larry King asks

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

DeeCee from Indianapolis asks

Is there a standard formula that will convert altitude into pressure? I'm interested in altitude...

Davina asks

Do people's teeth fall out naturally from old age or is that caused by a disease?

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

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

H.D. Lail asks

What is the difference between animal hibernation and a human coma? These states appear similar,...

Awot Negash from Alexandria, VA, USA asks

What is the relationship between rain intensity/rain rate and visibility? What resources can I...

Rowland Craig from San Antonio, Texas asks

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

Will McAbee from Pendlton asks

How does a atom split and how does it create such a big explosion? Also how can I split an atom at...

Gavin Dune from Australia asks

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

Rosanne Li from the Internet asks

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

Rose Durose from Maple Ridge asks

I'm wondering if you could name some pros and cons of the environmental profession and what kind of...

Michael Chen from Calgary asks

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

Keira Sword asks

Can you please explain to me how yogurt is made? My mom says it is made with bacteria, but I am not...

Courtney from Jacksonville, NC asks

Mt.Everest has two peaks, correct? What is the height of Mt.Everest' second peak?

Chelsea Imm from Glandorf, OH asks

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

Kristi from Saskatoon asks

I would like to know how much oxygen is in our breathable air, and also if it has ever been 50%. If...

Morgan from Ajax asks

If air is a gas, and gas explodes when heated (in an eclosed space, the atmosphere), does that mean...

Laura from Toronto asks

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

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...

Alicia asks

What would be the appearance of the moon if it were in the western sky just after sunset? Why would...

nijin from Khd asks

How did dinosaurs die? If they died due to a comet impact on the Earth there will be dust...

Sara from Antigonish, Nova Scotia asks

How does the earth stay in the same place in space?

anton from Melbourne (Australia) asks

Is blood more complex than just the four groups? How? Also, what structures allow humans to have...

Peter Griffin from Beaufort asks

Do all antibacterial soaps kill bacteria? How do you test if they do?

Margaret Klima asks

What are the globes which, when you puts your hand close to them, display electrical energy...

Veronica Johnny from Port Hardy, BC asks

Where did Albert Einstien live?

George Z from the Internet asks

Many people add mustard to salad dressing (oil and vinegar) in order to render the two usually...

henry from Paris asks

I heard that mountain chains (from continental collisions) could (thanks to their weight +...

Alyssandra from Oakville, Ontario asks

I was watching a program about sleep-walking and they were saying something about how dreams were...

Pat Prokop from Orillia asks

Last year a friend of mine widened and deepened an existing pond on his property. A considerable...

Ryan Martinez asks

Why do magnets erase magnetically recorded data? Are there some generally accepted guidelines for...

Boo from Mississauga asks

Why do some people use salt to kill weeds? What does salt do that makes the weeds die?

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...

Lisa Yang asks

How do split ends affect the way your hair grows? Why do people say that when you have split ends,...