Most popular

D.D. from St.john's, NL asks

Ethanol is the focus of many tax dollars these days. It seems to me that the burning of any...

Carly from Toronto asks

I was wondering where I can find good resources on determining the movement of an obese person...

Maeki Ray from Chicago,IL asks

I'm doing a science project in which I'm trying to see if sound waves created by a computer...

Jim Davis asks

For some reason, it is common knowledge in this community that when subjected to cold, hot water...

John Lavender-Stott from Blacksburg asks

Is homosexuality inborn?

Frank Palmay from mississauga asks

I understand the concept of dominant and recessive alleles but I was wondering why some alleles are...

Jeff asks

How do astronomers know the true position of stars? When astronomers show us pictures of the Great...

Mateusz from New York asks

Is it true that the moon moves away from the earth a few centimeters each year? Also do satellites...

Srikar from Mississauga, Ontario asks

If Pluto is not a planet, how is it classified? What is it called now?

Melody from Maronville asks

Is taxonomy a rigorous, objective science?

Nick (via his mother Illan) from Denver, Colorado asks

I put frozen spinach, fresh spinach, canned spinach, frozen peaches, fresh peaches and canned...

Sandra Roberts from Toronto, Ontario asks

Is there a difference between total recall and a photographic memory?

Kelvin C from GTA asks

Why is it that when calculating the volume of a pyramid, such as a cone, you always have to divide...

John Crowe from Dublin asks

If I knew the centre of the universe and began to travel toward it, would I begin to decrease in...

Rory from winnipeg asks

Why is it that a difference in the number of electrons in an atom makes a completely different kind...

Ethan Heil from Salem, VA asks

I am doing a research project on the strength of different batteries. Is there a cheap way to test...

Greg Kutz from Calgary asks

It truly seems that the world is indeed warming up and I do believe it is being caused by us. ...

James from Montreal asks

There has been much mention of antimatter, such as antineutrinos. I was wondering what exactly...

Julie from Portland, Oregon asks

How are sand dollars bleached white? Is it by the sun or the sea?

Kate Cunningham from Wellington NZ asks

I saw you answer to the composition of banana peels, but I would really like to know what chemical...

Ken Louie from Washougal, WA asks

I spilled some iodine disinfectant on my vinyl tile floor. As an old chemist, the only chemical I...

Steph from London, England asks

I've often wondered about this. It's kind of complicated, so bear with me... If a person suddenly...

kaushik from bangalore asks

Why is the sky blue?

Kristina from Ottawa, Ontario asks

I was just wondering what the ratio is between male and female scientists?

Zach from Greenwood, Nova Scotia asks

Hi, I was just wondering, I wanted to get into the whole biology scheme of things when I get older...

Rafael Bourdieu asks

Can you tell me about enhancing mental performance and cognitive abilities through brain nutrition...

Jonathan from Kuala Lumpur, Malaysia asks

Is it possible for the air that we breathe to either run out or deteriorate to such an extent that...

Philip Newman asks

How does a boat float? What is the scientific principle?

Umit Koseoglu asks

Is it possible to make a soap bubble that you can get inside?

Sébastien Morin asks

How is aspartame synthesized (theoretically and within industrial processes)?

Heidi from Malaysia asks

Could you please tell me what is inertia? Will it bring us more good than bad in our life? Will you...

luke kujawa from armada asks

What is the chemical composition of basic aluminum, steel, and brass, and which metal conducts heat...

Kelly Gould from Sacramento, CA asks

I am a firearms Instructor for Law Enforcement Officers. I am teaching a course on training male...

Nancy rosamond from Owen Sound, Ontario asks

When I grew up most oranges grapes and other fruit had seeds. This was the normal fruit and...

Cesar from kalookan asks

What are the components of a fever strip and the chemical principles behind it?

Jim from Philadelphia asks

Why doesn't a person lose 9 lb when they consume 1 litre of ice water? If a calorie is the energy...

Amanda Parkin from Canberra Australia asks

Some shampoo is coloured in the bottle (purple or green) etc, why when you lather it up in your...

Jenifer from Vancouver, B.C. asks

Recently I read that U.S. scientists say the ozone layer is shrinking over Antarctica. I would be...

Tim Wiebe asks

Since a plane's wing is designed to fly right side up, how does a plane stay up in the air when it...

Dave asks

Is it possible for a girl to get pregnant even if the man did not fully ejaculate? If a man and...