I imagine there must be a gene for lactose tolerance in mammals and humans? They have to have it,...
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What is the chemical in banana that causes drowsiness?
from Pittsburgh, PA
I'm curious about the possibility of "real" superheroes. Even though I think...
Why doesn't a person lose 9 lb when they consume 1 litre of ice water? If a calorie is the energy...
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How many languages are there in the world?
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Has anyone tried a vaccine (attenuated, similar pathogen, killed, toxoid, or subunit vaccine) for...
from Wellington NZ
I saw you answer to the composition of banana peels, but I would really like to know what chemical...
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What gives yellow corn and blue corn its color? What is the specific pigment and why?
How long does it take bubble gum to digest after it is swallowed?
Will Cyanide be a poison to brewer's yeast used to make beer?
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 Ocean Pines, MD
A student gave me 4 pairs of different duck and goose feet. How can I preserve them? Do I dry them...
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In their book on the 'Mammals of Britain and Europe', MacDonald and Barrett state that Red Foxes...
I want to know how ascorbic acid (vitamin-c) is metabolised in the body of fishes.
Why do we not have a mouthwash that prevents plaque buildup and, hence, gum disease?
from Summerville, SC
My mom and I are having an argument. She claims that the gene for blonde hair will be wiped out...
from New Tripoli, PA
What goes on during the change between isometric and isotonic in muscle cells? What does it look...
from Kanata, Ontario
Does caffeine affect boys and girls' blood pressure differently?
Dan Van Brunt
from Thunder Bay
Recently a friend of mine took a picture of what he thought was a grasshopper out at his camp far...
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I have heard somewhere that there is what could be described as a secondary brain in the large...
If the telomeres of a cloned organism are smaller than a non-cloned organism, and therefore may...
from Lac La Biche, Alberta, Canada
What experience and education should I get for a career in paleontology?
How is it that some people can 'float' while others seem unable to? In the sea I can quite happily...
from Sacramento, CA
How long does it takes your hair to grow? How many years and how many inches?
from palm springs
I'm just curious why we humans are the only species on this planet that have to manufacturer...
from New york
What does the word enzyme mean and how does it work in laundry detergent?
Why do both sexes of dabbling ducks have brightly coloured bills?
from Central Butte, Sask
Could you tell me the symptoms when given either thalium or strychnine?
How large is a human genome? What percentage of the DNA in the Human Genome actually codes for...
from Vancouver, BC
I've heard that alcohol can be passed to a baby through breast milk. Is this true and if so what is...
from the Internet
Could you explain how to complete and find the genotypes and phenotypes of sexlinked, multiple...
I would like to know if you could help me in my quest to making harsher laws about Driving Under...
from Suwanee, Georgia
Why did humans develop pubic hair (facial, under arm, etc.)? And also why does the male voice...
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Who discoverd dinosaurs? Tyrell?
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