Why do brown or blue eyes turn green in young adulthood?
from Windsor, Ontario
I would like to know if the aluminum in antiperspirants contributes to alzheimers?
Are Sedna and Quaoar two new planets?
In the book Cat's Cradle by Kurt Vonnegut, Jr., there is a chemical compound called Ice-nine....
What is an aluminum lake? Does it contain aluminum?
from Sweden, Malmoe
Which substance plays the most important role in making a blue eye blue? I have got blue eyes, but...
How can we re-magnetize old magnets when they've lost their power? We have a number of old magnets...
from the Internet
What is the amount of force in foot pounds behind the average human's punch?
from Valrico, Florida
At a bar a fellow was doing a bar trick in which he asked anyone for a piece of foil from:...
Heather M. Jones
I would really appreciate it if someone could help me make sense of T. S. Eliot's chemistry analogy...
How many satellites orbit the earth? How many are used for weather forecasting? And what is the...
from the Internet
Is there a way to make a simple smoke bomb that isn't poisonous or harmful? How would I be able to...
from the Internet
How much liquid is in the stomach?
Is water from a dehumidifier de-ionized? The owner's manual for my car suggests that engine coolant...
An anonymous reader
Who REALLY discovered oxygen? According to an National Public Radio program, in the 1850s 3 men at...
Is the line spectrum that is produced by a fluorescent tube the result of some of the visible light...
In my science 9 class we recently had a discussion about physical and chemical changes. Here is the...
Are Canadian dimes made out of zinc? What about quarters, nickels, loonies and toonies?
from London, England
How many active volcanoes are there at any onetime on the Earth, and how much "Greenhouse" gas do...
I have blue eyes and am the mother of a son who has blue eyes as well. His father has brown eyes....
When seperating hydrogen and oxygen from water by using electricity is there a safe way to contain...
Why does lemon prevent the browning of apples? When browning of apples is caused by a reaction with...
How does dish soap work to clean dishes?
What is your personal view of global warming? Do you believe that humans are having a significant...
Why does water reach its maximum density at +4C instead of 0C? Why is water's density greater than...
How long can someone sustain without sleep? What factors would change that number of hours or days?...
from North Bay
How long is a frogs tongue? I had a test question that I thought was wrong. Does a frog have a...
from Timmins, Ontario Canada
My son, age 12 is asking for a chemistry set for Christmas. This is an area that has always...
What is the effect of sound on plants? I have come up with a lot of good information, but I have...
Why can't an insect grow large enough to terrorize a city?
from Limerick Republic of Ireland
How much heat energy (watts) is released from the human body? Is there a relation to the area of...
from Markham, Ontario, Canada, Amérique du Nord
I was and I still am wondering if there are any really complex questions that even scientists...
What does cytoplasm do in the cell?
If matter expands when heated, and contracts when cooled, why does ice expand when water freezes? ...
from Michigan City, Indiana
I have a small laser pointer. The spot produced by the beam is not a solid red circle, but a fuzzy...
from Cold Spring
Why does phenolphthalein turn pink with a base? I know it has something to do with light, but i...
Why does a digital camera need a shutter- I think it should be able to electronically shunt the...
from Durham, UK
If the world's land was distributed evenly between all humans how much would we all possess? This...
What do paper and plastic bags degrade to? How much does it cost to make a paper and plastic bag?
What is "time"? Does the word "time" in Physics have the same meaning as the word time in the...
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