Andrea Rose asks

Why do brown or blue eyes turn green in young adulthood?

Marilyn Davidson from Windsor, Ontario asks

I would like to know if the aluminum in antiperspirants contributes to alzheimers?

Roy Donaldson from Toronto asks

Is it true that in total a bee's venom is acidic while a wasp's venom is basic? If so, would it...

Kurt Schallitz from Livermore asks

I know that the genes for red hair and for blonde hair are both recessive. What is the likely hair...

Wesley Lawson from the Internet asks

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

Magnus from Sweden, Malmoe asks

Which substance plays the most important role in making a blue eye blue? I have got blue eyes, but...

rob from the Internet asks

Is it possible for a wild koala bear to ignite as a result of the sun's radiated heat igniting the...

Daniel from Elk Park asks

I have a wierd question: can a 250 lbs 5 foot 7 woman stand and walk on a 170lbs 6foot 2 man...

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...

Anonymous from the Internet asks

How much liquid is in the stomach?

Christine Scott from Saltspring Island, BC asks

My question is about the reproduction of the Moon Snail Polinices lewisii. Are the eggs laid...

Ryan Dretke asks

Why are a duck's feet coloured orange?

confused from Toronto asks

Does a person get their blood from both parents or just one? My parents seem to think that one's...

Sonia Alvarez from Bogota asks

If Entamoeba Coli is present in the human intestine can other amebic life forms survive there as...

Michael Comeau from the Internet asks

What must occur for two parents with blood type AB to have a child with blood type O?

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....

sinthuja asks

Do the cells in the heart tissue know if there is something wrong with the heart. If so, how do the...

Carla Poot asks

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

Janice Tsui from Toronto asks

How long can someone sustain without sleep? What factors would change that number of hours or days?...

Frank asks

What does cytoplasm do in the cell?

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

I was and I still am wondering if there are any really complex questions that even scientists...

David asks

Physicians often want to know the glucose and lipid levels in a patient's blood and whether...

Tappar from New Delhi asks

How did scientists conclude that a major part of our genome is junk? Did they search for open...

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...

Avi from Vancouver, Canada asks

Are double yolked eggs ever viable? Can they be fertilized? If so are they to be fertilized once or...

Christina from Orland Park asks

What process does a jellyfish go through when it stings something?

Deion Christopher from Missouri asks

Can you really grow plants from the seeds found in Mammoth feces? In national parks here in...

Owen Richardson from Cobble Hill (Vancouver Island, B.C.) asks

I understand that cancer is caused by mutations in some of the genes that regulate cell growth and...

Arslan Zaidi from Karachi/Pakistan asks

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

Tarek Samaha from Lengerich, Germany asks

I would like to know the amount of salt (either in ppm or %) in a normal human tear.

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...

jake from Duluth/MN USA asks

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

Michael Heyd from North Vancouver asks

When does your skull reach its full, adult size?

Mateusz from New York asks

Why does it take nerves so long to grow back, more than for skin cells?

Jen from Orland Park asks

If you find a bone in an archeological dig how can u tell what kind of animal it was?

Carly from Toronto asks

I was wondering where I can find good resources on determining the movement of an obese person...

Katie from the Internet asks

Does temperature affect the performance of the mind? Such as slowing down the thinking process? Is...

John Lavender-Stott from Blacksburg asks

Is homosexuality inborn?

Frank Palmay from mississauga asks

I understand the concept of dominant and recessive alleles but I was wondering why some alleles are...

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

I put frozen spinach, fresh spinach, canned spinach, frozen peaches, fresh peaches and canned...