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Robert asks

What is more efficient: to push or pull a car (front wheel vs. rear wheel drive)?

Leo from Montville, NJ asks

Where can I find the data to support that polyvinylpyrrolidone is safe for medical applications? ...

Joel from Australia asks

What is the chemical makeup of an apple?

Ian Burke asks

What do you think of a Gas/Electric hybrid car? I made a power generation device made up of 8 a.c....

Kushagra Bhargava from Jaipur asks

Sir please tell me how the lghtwaves gets their momentum or how they come into motion?

Mark Brooks from London asks

Why do ice cubes melt quicker on stainless steel than a china plate and fire clay?

Rob Pease asks

How can we reshape bone using our understanding of bone growth? Obviously, parts, if not all of a...

Jason Kang from Thornhill asks

If a person was to experience continous pain, of moderate intensity, for a week, is there any...

Lori Anne Stanger from New Liskeard, Ontario asks

As everyone had heard in the news, as a result of the Indian Ocean earthquake and Tsunami of Dec...

amanda from Vancouver asks

What kind of careers are there to choose from, based on chemistry and biology. To become a doctor,...

Charl Mai from Vancouver, Canada asks

Do herbal medicines interfere with the effectiveness of prescription medicines? If so, how does...

James McCarty from Frankfort, Kentucky asks

Evacuations of the earth's core through volcano eruptions, the pumping of oil, gas, etc., must...

Lucy Policelli asks

Is it feasible to embed microchips carrying pertinent data, health, history, money etc. into humans?

Don Roscoe from Vancouver asks

Is there a machine that will measure the amount of oxygen that my lungs use in a breath? Or the...

Curious_Boy from the Internet asks

How do fronts affect temperature? Do pressure centres affect temperature as well? I know that they...

Tim Sullivan asks

What exactly do meteorologists mean by the term "high pressure"? Do they mean the weight of the...

Edmund Mah asks

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

nohjin asks

Where does the energy in freezing water come from? When water freezes, its volume increases so that...

Karan Rustagi from Ontario asks

I heard that electricity can be transmitted in other forms than electron flow; like electromagnetic...

James Hope from Gloucester asks

Last year in school we learned about nuclear decay, and how some atoms decay by releasing gamma...

Corinna asks

Can stabilized oxygen be used in place of iodine or chlorine to purify water? What if used in...

Rena from Thornhill asks

For school I need to know about natural convection and forced convection. I need to know the...

Payal from Buffalo asks

How do you determine the proportion of the various gases in the air?

Ken Cooke asks

I read somewhere there are a total of 9 dimensions. Can you elaborate on what these dimensions are?...

Sophie from Winnipeg asks

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

Barbara Pearson from Holly Springs, NC asks

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

Mohammad from Toronto asks

What is 2 with the power of 4? and can u tell me some consideration of microwaves?

Jonathan Weiler asks

How are the tiny chips and wires that go into a computer made? They seem so tiny and fragile.

Gerhard asks

What kind of permanent changes in a developing child's brain or behaviour can be caused by the...

Richard from Halifax, N.S. asks

How do you calculate water flow rate (volume/sec) based on water pressure and hole or pipe size?...

Antony St-Jacques from Kingston asks

How can I separate NaCl so I can obtain Na?

Carly from Colorado Springs asks

When a group of cancerous cells is compared to a group of normal cells, cancerous cells usually...

Ian Rosner asks

Can you explain the fourth dimension and state simply Einstein's Theory of Relativity?

Jeremy from Norwood asks

What component controls how data is written on a hard drive?

Iain Hunter asks

What is the chemistry behind the method of cleaning silver where you place it on some aluminum foil...

Kaycie Nabeta asks

Does the location of chlorophyll a in the thylakoid membrane have anything to do with its...

Julie asks

What is the chemical make-up of pear, banana and apple peels?

Eddie from Toronto asks

I know the basic details of how an ionization smoke detector works, where particles enter the...

ALI from miami beach asks

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

Teresa G. Nelson from Alford asks

My father was exposed to massive radiation exposure before he fathered two out of three children....