Dave from Sutton asks

Are there foods to eat which lower/reduce harmful cholesterol levels, or is this achieved by...

Gina from Boston, Massachusetts asks

I am allergic to nickel and cobalt. (thanks to patch testing). I think it was provoked by taking...

Sarah Spratt asks

What is the most critical environmental problem in Canada today?

Alvina Chung from Sydney asks

The first four facts below suggest that the earth should be getting heavier and heavier - but it...

RR from Toronto asks

How do electric kettles work?

Clare Reading from Mesa asks

What is the pH of Diet Pepsi? (or cola,generally) and... Does smoking affect the body's pH? If so,...

Michel Lamontagne from Edmonton asks

Why does sound get through a surface like a wall better than light? If you use a curtain they both...

KIm from Waldorf asks

What furnishs H30+ in water solution?

Sarah from Northampton England asks

How do you measure the pH of soil? How do you make up a solution of different pHs? What is the best...

Furqan from Lahore asks

Why don't ordinary Silicon diodes emit light like LED's?

Jennifer Joseph from Dix Hills, NY asks

Animals eat leaves and grasses and this provides them nutrition. Can people take leaves off trees,...

Peter Griffin from Beaufort, SC asks

Are all non-toxic claiming products really non-toxic? And is there any simple way (such as a way...

Betsy Kirk asks

What is happening when someone plays a song on wine glasses? They are filled with different...

Adil asks

Has absolute zero (0 K) ever been reached a laboratory?

Sarah Bosquet from Issoudun asks

I'm writing a science-fiction novel and need information about black holes, gravitation and...

Sonia asks

How could I decrease the boiling point of a substance without changing the pressure of the liquid?

Daniel Eyre asks

How far is Pluto from the sun, and will we ever be able to travel to other planets, besides the...

deepak singhal from Bangalore (India) asks

Before getting married should we consider blood groups of both individuals? Is there any...

Tony Kirk asks

Would sulfuric acid have a long term effect on an engine and eternal parts of an car if a bottle...

Nijin from khd asks

I read in books that bees cannot identify the colour white. Then what will the bees see instead of...

Linda Sanders from Catonsville MD asks

Why does my coffee flow more freely from a to-go cup when there are two holes in the lid instead of...

David Magill from Shippensburg asks

In 1828, Friedrich Wohler, a German chemist attempted to make an inorganic salt, ammonium cyanate,...

Michelle from San Jose asks

What are vinyl erasers made of?

Thomas Seltsam from Austria asks

Is glass an amorphous mass? Old glass, for example the glass found in old churches, is much thicker...

Dr. X from Cornberry asks

I have made a theoretical discovery in my studies. It concerns vibrations of frame of reference in...

Zambi Donburi from Brisbane, Australia asks

Is it true that no mass can travel at the speed of light? If this is true, as you are nearing the...

Dawn from Santa Clarita asks

Is a seed a living thing? If so, how do you prove it? Is it living before you add water?

Kirandeep from Ludhiana asks

Why do proteins form lather on making their solutions?

Tom Henson from Bettendorf, Iowa asks

I am doing a science project on how light affects plant growth. If you could answer my 10...

missy cunningham from portsmouth asks

Every time we go to our local grocery store and get a buggy that does not have a chain hanging from...

aparna from Petaluma asks

Why is blood salty?

shane from doylestown asks

How do scientists type your blood? How do they find out your blood type?

Daniel Wong from Singapore asks

How do miners mine for Uranium?

Karen from Ottawa, Canada asks

Why do your fingernails grow a lot faster than your toenails?

Holly asks

What is the difference between a dolphin and a porpoise?

Leah W. from Duluth asks

What is the smallest living thing? What is the largest living thing?

erin asks

Can you explain how those bright sticks work, the ones that glow for hours with a snap and a shake?

Liz Morice asks

What makes the aluminum powder in an Etch-A-Sketch stick to the glass to make an image?

Anita.S asks

What is Birute Galdikas' latest book on the Orangutan Behaviour and her work?

tina from the Internet asks

Will pea seeds germinate slower in a liquid substace other than water? why? I am conducting an...