Darren Connell from the Internet asks

We have the ability to use sound frequency to cancel out unwanted sounds, and since light is a...

Richard Hart from Victoria, BC, Canada asks

My wife asked me, "What does the sun burn and why doesn't it burn out?" I told her about helium...

Kiana Stewart from Blacksburg asks

If Virginia sees a full moon in the daytime then do places like Australia see no moon at night?

Harrison from the Internet asks

Why does decaying food cause gas? I have been trying to find resources but can't find any could you...

kumar sah from Davis Ca. asks

I want to explain to my 6 year old daughter, why the rainbow appears bent/arched in a semicircle in...

Cristina asks

How far is the Sun from Pluto? How long does it take for sunlight to travel to Pluto?

Saurabh from New Delhi asks

Gravity can produce motion in a body. Thus, it does work. But, for doing work, energy is needed....

julie from Soledad asks

What is the polar nature of water?

Wayne Boutzale asks

What are giant ice meteorites? Would it be possible for them to hit the earth?

Matt from Pickering asks

How are genes located? For instance, Lap-Chee Tsui and his team of geneticists located the...

Aime Roger from Halifax asks

I am quite confused with temperature scales! i would like to know the link between the degree...

Pierce H. asks

Does mercury in its gas form act the same way as air - I mean if heated, does it rise?

Rehan Ahmed from Rahim yar Khan, Pakistan asks

What is vacuum ? How is it created because if we remove the air then the instrument in which we...

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

Why does Nitric Acid stain the human skin yellow?

Roman Tanisis from Coquitlam, BC asks

Hi was always wondering if it is ok to use a higher voltage power supply for a lower voltage...

James from Hamilton asks

If 'O' (oxygen) is an element and CO2 is a compund...what is O2, or Cl2?

Ernie Epp from Kenora, ON asks

Collision of galaxie clusters. In recent news reports that I've read it has been reported...

Jestin from India asks

Why rainbow is a bow?

Ava Gabourel from New York asks

Who discovered High Blood Pressure and what year?

Sharon Johnson from Tobermory asks

Can decomposing cedar wood chips or household compost cause environmental problems in surrounding...

Neil O. from Oshawa asks

What can you tell me about the likelihood of a major solar storm in or around 2012, and how it...

Scott Livingston from Charlottetown, Prince Edward Island asks

Looking for pictures of Tranquility base or any of the other lunar landing spots on the moon taken...

Daniel from Singapore asks

Is there such thing as an Ice Bullet? A bullet that melts into the target so that there will be...

Ashé from Taree, Australia asks

Why is there no magnetic field in the centre of a bar magnet?

Tsiadimos Nick from Athens, Greece asks

If we put a current-carrying conductor inside a magnetic field (i.e. between two permanent...

Michel asks

If Humans and Apes are related, why aren't we able to reproduce together?

Avishan from the Internet asks

Why is the strawberry in yogurt flavored strawberry sometimes brown or reddish brown? Is it a...

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

Why is sterilizing & using alcohol effective against microorganism?

Base from Ontario asks

Why is vegetable oil viscous?

Courtney asks

How do mirrors work? What makes them reflect?

samantha from Sarnia asks

Is it true that only female bees can sting you? And if it is, why is that?

Andrew from Friendly asks

Who was the first scientist to study light?

Olivia from Sydney asks

I was wondering about planet orbit paths and if they change. I read that a change in the Earth's...

Dave from the Internet asks

Hi, I am looking for a procedure that I can use for a science investigation. We are testing water...

Sherri from Baltimore asks

Does Henna (a plant based hair dye) contain any aluminum in its substances?

Shaun Carney from the Internet asks

What keeps electrons from eventually falling into the nucleus of an atom if they are attracted by...

Bonita asks

I lost my sense of smell after a fall from a horse 5 years ago. The back of my head hit the...

The Tucker Family from Hamilton asks

How many people have ever lived on earth? We have found data giving the population at differen...

Vasu from London,ON asks

Is it possible for a singularity to form outside a black hole?

Asli Tamer asks

How do bacteria use rhodopsin to create energy?