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?

Kaixin from Muar asks

Are Sedna and Quaoar two new planets?

Citre asks

What is an aluminum lake? Does it contain aluminum?

Wesley Lawson from the Internet asks

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

Nick Anderson asks

Are Canadian dimes made out of zinc? What about quarters, nickels, loonies and toonies?

Andrew Foster asks

In the book Cat's Cradle by Kurt Vonnegut, Jr., there is a chemical compound called Ice-nine....

Nancy Barkhouse asks

How can we re-magnetize old magnets when they've lost their power? We have a number of old magnets...

Magnus from Sweden, Malmoe asks

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

Jason Bever from Valrico, Florida asks

At a bar a fellow was doing a bar trick in which he asked anyone for a piece of foil from:...

Jamie Duckett asks

In my science 9 class we recently had a discussion about physical and chemical changes. Here is the...

eray asks

Why does water reach its maximum density at +4C instead of 0C? Why is water's density greater than...

Heather M. Jones from Dayton asks

I would really appreciate it if someone could help me make sense of T. S. Eliot's chemistry analogy...

Gerry MacDonald asks

Is water from a dehumidifier de-ionized? The owner's manual for my car suggests that engine coolant...

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...

spandan jansari asks

How many satellites orbit the earth? How many are used for weather forecasting? And what is the...

Umit K from the Internet asks

Is there a way to make a simple smoke bomb that isn't poisonous or harmful? How would I be able to...

Anonymous from the Internet asks

How much liquid is in the stomach?

An anonymous reader asks

Who REALLY discovered oxygen? According to an National Public Radio program, in the 1850s 3 men at...

Lupe Muratalla from dallas asks

When seperating hydrogen and oxygen from water by using electricity is there a safe way to contain...

Matt from the Internet asks

Why are 6volt batteries bigger than 9volts, even though 6 volts are less than 9? And why are AA,...

Jason from Virginia asks

What is the effect of sound on plants? I have come up with a lot of good information, but I have...

paul valent from quakertown asks

Is the line spectrum that is produced by a fluorescent tube the result of some of the visible light...

Neil O. from Oshawa asks

What is your personal view of global warming? Do you believe that humans are having a significant...

Kenneth Hickford from London, England asks

How many active volcanoes are there at any onetime on the Earth, and how much "Greenhouse" gas do...

Shauna from Winnipeg asks

Is snow a conductor or an insulator?

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....

Bob Salo from Michigan asks

If matter expands when heated, and contracts when cooled, why does ice expand when water freezes? ...

Jessie Meyers from Sydney asks

Why does lemon prevent the browning of apples? When browning of apples is caused by a reaction with...

Tania asks

How does dish soap work to clean dishes?

Carla Poot asks

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

Hannah from Austin asks

Why does salt melt ice?

Janice Tsui from Toronto asks

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

Maren from Cold Spring asks

Why does phenolphthalein turn pink with a base? I know it has something to do with light, but i...

William Kirwan from Limerick Republic of Ireland asks

How much heat energy (watts) is released from the human body? Is there a relation to the area of...

Frank asks

What does cytoplasm do in the cell?

rebecca from Adelaide asks

What is the difference between science and sciencing?

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...

Carole Smith from Timmins, Ontario Canada asks

My son, age 12 is asking for a chemistry set for Christmas. This is an area that has always...

Dave Carmean from Vancouver asks

Why does a digital camera need a shutter- I think it should be able to electronically shunt the...