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Leo from Montville, NJ asks

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

Sandi Schacher asks

How do cells know when to stop growing (dividing)? How does cancer change the cell so that it no...

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...

Jason Kang from Thornhill asks

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

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...

Robert asks

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

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....

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...

amanda from Vancouver asks

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

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...

James Hope from Gloucester asks

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

Karan Rustagi from Ontario asks

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

nohjin asks

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

Tim Sullivan asks

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

Payal from Buffalo asks

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

Edmund Mah asks

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

Sophie from Winnipeg asks

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

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...

Curious_Boy from the Internet asks

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

Barbara Pearson from Holly Springs, NC asks

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

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?

ALI from miami beach asks

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

Kaycie Nabeta asks

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

Mohammad from Toronto asks

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

Carly from Colorado Springs asks

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

Ken Cooke asks

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

Iain Hunter asks

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

Julie asks

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

Max from Toronto asks

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

Eddie from Toronto asks

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

Jonathan Weiler asks

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

Julian asks

How can I make my own methylated spirit? How does pectin gel?

steve abel from Seattle, WA, USA asks

Can you explain the meaning of the phrase: " has cleared the neighbourhood around its orbit.” I...