Barry Shell

Biology

Marilyn Davidson From Windsor, Ontario, asks,

I would like to know if the aluminum in antiperspirants contributes to...


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Biology

Andrea Rose asks,

Why do brown or blue eyes turn green in young...


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Physics

Kaixin From Muar, asks,

Are Sedna and Quaoar two new...


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Chemistry

Andrew Foster asks,

In the book Cat's Cradle by Kurt Vonnegut, Jr., there is a chemical compound called Ice-nine. Ice-nine is a formula that freezes anything under 114...


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Biology

Magnus From Sweden, Malmoe, asks,

Which substance plays the most important role in making a blue eye blue? I have got blue eyes, but is there any way I could eat something that has a...


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Medicine

Citre asks,

What is an aluminum lake? Does it contain...


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Physics

Nancy Barkhouse asks,

How can we re-magnetize old magnets when they've lost their power? We have a number of old magnets the children use in hands-on...


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Biology

Wesley Lawson From the Internet, asks,

What is the amount of force in foot pounds behind the average human's...


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Chemistry

Umit K From the Internet, asks,

Is there a way to make a simple smoke bomb that isn't poisonous or harmful? How would I be able to change the colour smoke it gives...


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Chemistry

Jason Bever From Valrico, Florida, asks,

At a bar a fellow was doing a bar trick in which he asked anyone for a piece of foil from: cigarette pack/ gum wrapper or aluminum foil from kitchen....


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Physics

spandan jansari asks,

How many satellites orbit the earth? How many are used for weather forecasting? And what is the maximum number of satellites the Earth can...


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Chemistry

Heather M. Jones From Dayton, asks,

I would really appreciate it if someone could help me make sense of T. S. Eliot's chemistry analogy in his essay, "Tradition and the Individual...


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Biology

Anonymous From the Internet, asks,

How much liquid is in the...


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Physics

paul valent From quakertown, asks,

Is the line spectrum that is produced by a fluorescent tube the result of some of the visible light produced by the excitation of the mercury passing...


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Chemistry

Gerry MacDonald asks,

Is water from a dehumidifier de-ionized? The owner's manual for my car suggests that engine coolant should be mixed with distilled or de-ionized...


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Physics

An anonymous reader asks,

Who REALLY discovered oxygen? According to an National Public Radio program, in the 1850s 3 men at the same time discovered oxygen and its use. They...


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Earth

Kenneth Hickford From London, England, asks,

How many active volcanoes are there at any onetime on the Earth, and how much "Greenhouse" gas do they produce in one...


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Chemistry

Jamie Duckett asks,

In my science 9 class we recently had a discussion about physical and chemical changes. Here is the question: if you boil water and then put a tea...


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Chemistry

Lupe Muratalla From dallas, asks,

When seperating hydrogen and oxygen from water by using electricity is there a safe way to contain the oxygen and filter out any hydrogen? And if...


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Chemistry

Jessie Meyers From Sydney, asks,

Why does lemon prevent the browning of apples? When browning of apples is caused by a reaction with oxygen. But lemon only helps to reduce acidity or...


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Earth

Nick Anderson asks,

Are Canadian dimes made out of zinc? What about quarters, nickels, loonies and...


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Biology

Karen Lynn From toronto, asks,

I have blue eyes and am the mother of a son who has blue eyes as well. His father has brown eyes. My son's father is of East Indian extraction. None...


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Engineering

William Kirwan From Limerick Republic of Ireland, asks,

How much heat energy (watts) is released from the human body? Is there a relation to the area of skin exposed, if so can one determine how much...


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Chemistry

Carole Smith From Timmins, Ontario Canada, asks,

My son, age 12 is asking for a chemistry set for Christmas. This is an area that has always interested him and I now feel is a good time to get him...


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Earth

Neil O. From Oshawa, asks,

What is your personal view of global warming? Do you believe that humans are having a significant role on the current rising temperatures of the...


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Chemistry

Kelvin C From Markham, Ontario, Canada, Amérique du Nord, asks,

I was...


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Chemistry

Tania asks,

How does dish soap work to clean...


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Biology

Frank asks,

What does cytoplasm do in the...


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Engineering

Jason From Virginia, asks,

What is the effect of sound on plants? I have come up with a lot of good information, but I have yet to develop a good way of testing my thesis. I...


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Physics

Paul Martos From Michigan City, Indiana, asks,

I have a small laser pointer. The spot produced by the beam is not a solid red circle, but a fuzzy blotch seemingly made of a dozen tiny red spots. ...


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Chemistry

Maren From Cold Spring, asks,

Why does phenolphthalein turn pink with a base? I know it has something to do with light, but i don't know exactly what makes it turn...


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Biology

Justin From North Bay, asks,

How long is a frogs tongue? I had a test question that I thought was wrong. Does a frog have a long tongue? I answered yes but I don't think they...


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Biology

Carla Poot asks,

Why can't an insect grow large enough to terrorize a...


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Physics

Dave Carmean From Vancouver, asks,

Why does a digital camera need a shutter- I think it should be able to electronically shunt the image to the processing chip for a specified...


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Engineering

Jenny From Toronto, asks,

What do paper and plastic bags degrade to? How much does it cost to make a paper and plastic...


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Biology

Janice Tsui From Toronto, asks,

How long can someone sustain without sleep? What factors would change that number of hours or days? Could you please provide any good sources to...


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Biology

Arslan Zaidi From Karachi/Pakistan, asks,

What are the urgent steps an undergrad must take to start researching? I am a high school graduate who wants to become a scientist. I want to become...


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Physics

Arpa From Ubon, asks,

What is "time"? Does the word "time" in Physics have the same meaning as the word time in the phrase, "What time is it?" and how do scientists know...


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Chemistry

Bob Salo From Michigan, asks,

If matter expands when heated, and contracts when cooled, why does ice expand when water freezes? Please explain in layman...


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Biology

Jennifer Easterly From Sydney, Nova Scotia, asks,

I hear there are 9 species of cicadas in Canada, but I haven't been able to get any more information than that. Where are they found in Canada? Do...


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Chemistry

An anonymous reader asks,

What are water's special qualities, and how do they work? ...


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Chemistry

Navid Patterson asks,

What is...


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Physics

Andre Szalinski From Doussard, France, asks,

In my youth, I heard a story about an experiment: you compress a metallic spring and you put it in an acid which dissolves the spring. What happened...


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Chemistry

Satnam From Calgary, asks,

My question: How will they produce plastics, tires, roads or anything that is made from oil, once oil runs...


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Physics

Corey Conner From Fort Knox, asks,

If the sun is a heat source, and as the sun gets closer to the earth the heat intensifies, then why are mountian tops, which are closer to the sun,...


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Biology

John Lavender-Stott From Blacksburg, asks,

Is homosexuality inborn?...


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Earth

J. Fretwell From Parry Sound, asks,

I do not know if this might relate to Global Warming, but I notice no one has mentioned (maybe I missed it), The fact millions of gallons of liquid,...


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Other

Miss Allouche From Sydney, asks,

I am a year 5 teacher. I was wondering if it would be ok if I had my students work in pairs to ask you questions on the topic area of 'light'. There...


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Physics

Agin Thomas From Philadelphia, asks,

Does a magnetic and/or electric field have an affect on water’s ability to flow (if you can't answer that what about its affects on other aspects...


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Engineering

Johnathan From Sydney, asks,

What happens when you use ethanol (unblended) in a standard, unleaded car engine? Will it...


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Physics

Srikar From Mississauga, Ontario, asks,

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


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Other

Mary Ibale From South Western University, Asia, asks,

What is the significance of Science in our...


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Biology

jake From Duluth/MN USA, asks,

Can you verify the scientific validity of statements I've heard animal rights groups make, including that


Other

S. Warne asks,

What are some recent Canadian contributions to research and development? I was challenged by someone to name anything in R&D that Canada is...


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Other

doug eneberg From Seattle, WA, asks,

How many scientists does Canada...


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Physics

Jonjon asks,

How does a pressure cooker work? ...


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Other

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 but I don't know where to get information about...


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Earth

Kym McCallum From Gladstone, asks,

How long would it take for the next Ice Age to...


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Chemistry

shaheena From Karachi/Pakistan, asks,

The name for gas written on CNG filling station is octane. There are other members in the alkane series also, so why is only octane used and not...


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Chemistry

Hannah From Austin, asks,

Why does salt melt...


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Other

Kristina From Ottawa, Ontario, asks,

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


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Earth

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 we all slowly suffocate? Can this be caused by...


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Chemistry

Cesar From kalookan, asks,

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


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Physics

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 please state a few applications about inertia...


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Biology

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

I put frozen spinach, fresh spinach, canned spinach, frozen peaches, fresh peaches and canned peaches in separate glass bottles. Before that, I...


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Other

rebecca From Adelaide, asks,

What is the difference between science and...


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Engineering

luke kujawa From armada, asks,

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


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Earth

Simon Robson From Durham, UK, asks,

If the world's land was distributed evenly between all humans how much would we all possess? This also goes if it were done with gold, silver, oil,...


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Biology

Sam asks,

There is this question in my physics book asking me to check out the ways plants wrap themselves around a pole, some wrap themselves...


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Biology

Sarah From Fredericton, NB, asks,

What is the chemical in banana that causes...


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Biology

Steph From London, England, asks,

I've often wondered about this. It's kind of complicated, so bear with me... If a person suddenly one day decided to behave as if they didn't have,...


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Medicine

Joan & Colleen asks,

Are cats left- or right-pawed? What percentage are left pawed/right pawed? We are doing some research on this subject for a science fair project and...


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Physics

Lisa Pearce From Gympie, asks,

In winter in very cold countries like Canada and Finland, most rivers, lakes and ponds freeze over. Cars can be driven over lakes and the ice does...


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Engineering

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 is flying upside...


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Chemistry

Monse From Las Vegas, asks,

What type of salt melts ice the...


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Medicine

Katlin From Springville, NY, asks,

How many languages are there in the...


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Medicine

Rachel asks,

I am doing a science fair project to measure which type of ibuprofen dissolves fastest in stomach like solutions. ie will gelcaps dissolve faster...


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Chemistry

Sébastien Morin asks,

How is aspartame synthesized (theoretically and within industrial...


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Chemistry

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 hair is it white? Why does your hair not turn the...


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Biology

Avishan From the Internet, asks,

What gives yellow corn and blue corn its color? What is the specific pigment and...


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Physics

kaushik From bangalore, asks,

Why is the sky...


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Biology

Jeremy Wolf From Kintnersville, PA, asks,

Has anyone tried a vaccine (attenuated, similar pathogen, killed, toxoid, or subunit vaccine) for HIV? If so, what were the results? What are the...


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Medicine

Debora Trozzo From Carlisle, PA, asks,

What is the chemical formula for...


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Chemistry

Rommel Sato From Riyadh, asks,

What it the chemical composition of styrofoam? What raw material is the styrofoam made...


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Engineering

Umit Koseoglu asks,

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


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Biology

Brandon From cleveland, asks,

How long does it take bubble gum to digest after it is...


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Physics

Shauna From Winnipeg, asks,

Is snow a conductor or an...


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Other

Ashley From Sherbrooke, Quebec, asks,

What is the expecting salary for a zoologist in...


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Chemistry

Jim Davis asks,

For some reason, it is common knowledge in this community that when subjected to cold, hot water will freeze before cold water. Is there ANY basis...


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Chemistry

Kris From Vancouver, asks,

I recently removed some mercury from a thermostat and I've been told by my teacher that to touch it will not hurt me. My brother has many doubts...


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Physics

Marnie From Burlington, Ontario, asks,

My roommate insists that the first day of Spring falls on March 21st every year, yet on the calendar and on the radio they said the first day of...


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Biology

Drew Radue From Wisconsin, asks,

Will Cyanide be a poison to brewer's yeast used to make...


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Engineering

Don Ryan From St. John's, NL, asks,

Lightning strikes produce huge amounts of electricity. Has science looked at ways to store and use this electricity as an alternative energy source?...


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Biology

Davina From Vancouver, Canada, asks,

Why is it that when you get the chicken pox when you're little it's not as bad as getting it when you are...


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Chemistry

eray asks,

Why does water reach its maximum density at +4C instead of 0C? Why is water's density greater than ice's density although water is a liquid? ...


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Biology

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 compounds are in a banana peel. An old wives tale...


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Engineering

Christian Martel From Montreal, QC, asks,

Would you know where I can find the temperature at which paper burns, and where I can find data for different types of paper. I thought I would find...


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Physics

darren liew From Singapore, asks,

How many times a year can you see the eclipse of the...


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Other

Aaron Allen From Halifax, Nova Scotia, asks,

What are the top ten Canadian science...


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Biology

Dean Jones From Saskatoon, asks,

Why do we not have a mouthwash that prevents plaque buildup and, hence, gum...


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