Kevin Swope from San Diego/California asks

Why does Aspartame taste so sweet? What is the chemistry involved in something that tastes sweet?

H.D. Lail asks

What is the difference between animal hibernation and a human coma? These states appear similar,...

John Mitrosky from Scarborough asks

My son is doing a herptiles of ontario project and this a missing link question: Do you think...

jessi from San Francisco asks

I have more than one question: Does Coffee work better for females or males? Does Coffee work...

Mike Delie from Menomonie asks

I'm doing a senior project on recycling, and I'm curious if it uses more energy to mine and convert...

Loubelle I. Depita from Koronadal City, South Cotabato,Philippines asks

Why does nutrasweet or aspartame loses its effectiveness in cooking or in processes requiring...

Rosanne Li from the Internet asks

I would like to know how the brain functions generally while sleeping, and what part electricity...

Gillian from Haliburton asks

What effect do pain killers have on the human brain? How exactly do they work? What about drugs...

Denise from San Jose asks

Is it possible to do a blood test (or some other type of tissue testing) to determine someone's...

Amanda from Thunder Bay, Ontario asks

What is colour? How does the brain perceive colour?

Kim from the Internet asks

When metal scrapes metal such as two spoons, it makes the edges of my teeth feel numb. Why is that?

Lacci from Withernsea, Yorkshire, England asks

Many people say there are 5 senses in the body but I am arguing with my mum here that there are...

Rose Durose from Maple Ridge asks

I'm wondering if you could name some pros and cons of the environmental profession and what kind of...

anton from Melbourne (Australia) asks

Is blood more complex than just the four groups? How? Also, what structures allow humans to have...

Peter Griffin from Beaufort asks

Do all antibacterial soaps kill bacteria? How do you test if they do?

Jennifer from Brooklyn asks

Why does uracil replace thymine in RNA?

Nameless from Internet asks

When a baby is formed it starts out as one cell then splits and reproduces and forms perhaps...

Krisy Marsh asks

How would one maintain a bacterial culture without having to transfer cultures on a regular basis?

Boo from Mississauga asks

Why do some people use salt to kill weeds? What does salt do that makes the weeds die?

Lisa Yang asks

How do split ends affect the way your hair grows? Why do people say that when you have split ends,...

James from Hamilton asks

How do we explain the difference between cells that can repair damaged tissue, such as skin cells,...

Ondraya Espenshade from York asks

Is either Klebsiella pneumoniae or Serratia marcescens documented to be able to extract naked DNA...

harish from scarborough asks

What is the difference between fats and cholestrol?

Rick Anderson asks

Is the air we exhale pure carbon dioxide? If not, then what is it?

Unknown asks

Are there living beings which do not die?

Rafael Sumalinog from Edmonton asks

What is immunofluorescence analysis, what basic materials are used, and how long does it take to...

Alexandra asks

What's a gathering of frogs called? What's a gathering of toads called?

Corinne Keffer from Halifax, NS asks

I have a liquid crystal display screen computer monitor. I am looking for unbiased information on...

Brian from Denver, CO asks

When eating spicy foods, the tongue and lips can get a burning sensation. Why don't the insides of...

David Cheverie asks

How do you know what size lobsters should be released instead of taken, in order to ensure the...

Cynthia from Chilliwack, Canada asks

IF my blood type is A negative what are my parents' blood types? What does it mean to have negative...

Michael from Winnipeg asks

I've been doing a science fair project testing the effectiveness of Lactaid(TM) lactase. From a...

Zambi Donburi from Brisbane, Queensland, Australia asks

How did we (as a race) evolve eyebrows and eyelashes. The way I understand it is that to evolve...

Samantha from London asks

At which age do the nasal bones and the mandible complete ossification?

Xinyi Chong from Beijing asks

Do shells have nutrients in them? If so, what actually uses those nutrients?

Terra from Ontario asks

How does sugar conserve food?

Ram Ajore from Delhi, INDIA asks

What are the ways in molecular biology to show confirmation of hybridization on a solid surface for...

Trevin H. from Rocklin asks

I would like to know the chemical compostion of the venom in a yellow jacket wasp sting, the dosage...

Loubelle I. Depita from Koronadal City, South Cotabato, Philippines asks

Why are egg & milk used as antidotes for heavy metal poisoning and what other household remedies...

Brandi asks

Can air in the pleural cavity cause the lungs to expand more fully than they normally would?