What is an aluminum lake? Does it contain aluminum?
If Entamoeba Coli is present in the human intestine can other amebic life forms survive there as...
from the Internet
What must occur for two parents with blood type AB to have a child with blood type O?
Why does lemon prevent the browning of apples? When browning of apples is caused by a reaction with...
How long can someone sustain without sleep? What factors would change that number of hours or days?...
Why is the sound of fingernails scratching against a chalkboard so irritating to listen to?
from Lengerich, Germany
I would like to know the amount of salt (either in ppm or %) in a normal human tear.
from Vancouver, Canada
Are double yolked eggs ever viable? Can they be fertilized? If so are they to be fertilized once or...
from Cobble Hill (Vancouver Island, B.C.)
I understand that cancer is caused by mutations in some of the genes that regulate cell growth and...
We were learning about colour and light when my teacher Mlle. Gelinas told us about this question...
from New York
Why does it take nerves so long to grow back, more than for skin cells?
from Duluth/MN USA
Can you verify the scientific validity of statements I've heard animal rights groups make,...
from the Internet
Does temperature affect the performance of the mind? Such as slowing down the thinking process? Is...
Do the cells in the heart tissue know if there is something wrong with the heart. If so, how do the...
Why are soccer balls coloured black and white? I heard it has to do with these two colours making...
Nick (via his mother Illan)
from Denver, Colorado
I put frozen spinach, fresh spinach, canned spinach, frozen peaches, fresh peaches and canned...
from Toronto, Ontario
Is there a difference between total recall and a photographic memory?
Can you tell me about enhancing mental performance and cognitive abilities through brain nutrition...
Physicians often want to know the glucose and lipid levels in a patient's blood and whether...
Could you please tell me what is inertia? Will it bring us more good than bad in our life? Will you...
from London, England
I've often wondered about this. It's kind of complicated, so bear with me... If a person suddenly...
from Fredericton, NB
What is the chemical in banana that causes drowsiness?
Joan & Colleen
Are cats left- or right-pawed? What percentage are left pawed/right pawed? We are doing some...
Why doesn't a person lose 9 lb when they consume 1 litre of ice water? If a calorie is the energy...
from Wellington NZ
I saw you answer to the composition of banana peels, but I would really like to know what chemical...
What does the epiglottis do?
I am doing a science fair project to measure which type of ibuprofen dissolves fastest in stomach...
from Springville, NY
How many languages are there in the world?
from Carlisle, PA
What is the chemical formula for milk?
from Sacramento, CA
I am a firearms Instructor for Law Enforcement Officers. I am teaching a course on training male...
from Red Lake
Is there any other part of your body that acts like the funny bone...dense nerve endings, pain etc....
from Vancouver, Canada
Why is it that when you get the chicken pox when you're little it's not as bad as getting it when...
from New Tripoli, PA
What goes on during the change between isometric and isotonic in muscle cells? What does it look...
from Horam, E. Sussex, UK
ULUru is the aboriginal name for Ayer`s Rock, which was a sacred place for native Australian...
Endel Tulving, Is it possible that what we call "remembering the past" and "imagining the future"...
Why can't humans listen to two things at the same time and get all the information for both?
How is it that some people can 'float' while others seem unable to? In the sea I can quite happily...
Could insulin resistance have been a beneficial adaptation in times when food was not as plentiful?
from Kamloops, BC
Is there a simple chart that indicates the amount of carbohydrates in various foods? If so where...
from Central Butte, Sask
Could you tell me the symptoms when given either thalium or strychnine?
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