Why are a duck's feet coloured orange?
How does dish soap work to clean dishes?
Why does lemon prevent the browning of apples? When browning of apples is caused by a reaction with...
from Kooskia, ID
I have spent 4-5 hrs. attempting to magnetize some iron (Fe) washers using a 12V battery and...
Why is the sound of fingernails scratching against a chalkboard so irritating to listen to?
Why doesn't a neon sign finally "run out" of exited atoms and produce dimmer and dimmer light?
Why can't an insect grow large enough to terrorize a city?
How long can someone sustain without sleep? What factors would change that number of hours or days?...
from Timmins, Ontario Canada
My son, age 12 is asking for a chemistry set for Christmas. This is an area that has always...
from the Internet
Why are 6volt batteries bigger than 9volts, even though 6 volts are less than 9? And why are AA,...
Are we the center of the Universe? Does it always appear to an observer that he/she is at the...
If matter expands when heated, and contracts when cooled, why does ice expand when water freezes? ...
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 Kingston, ONTARIO, CANADA
We have an older pop machine at work with canned soft drinks. Sometimes, when a pop is opened that...
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?
Approximately how many nuclear tests do the americans alone conduct every year?
Why does a digital camera need a shutter- I think it should be able to electronically shunt the...
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 New Delhi
How did scientists conclude that a major part of our genome is junk? Did they search for open...
Electricity. It powers almost all household appliances as well as the complex electronics we rely...
I am curious. What if two magnetic field lines were to intersect each other? What would this imply...
Since the Big Bang we see (with Hubert Reeves and other scientists) that matter has a tendency to...
from Cold Spring
Why does phenolphthalein turn pink with a base? I know it has something to do with light, but i...
Do the cells in the heart tissue know if there is something wrong with the heart. If so, how do the...
from Seattle, WA
How many scientists does Canada have?
Can you really grow plants from the seeds found in Mammoth feces? In national parks here in...
I heard that if you set fire to methylated spirit, it will catch fire, but nothing around it will...
from Durham, UK
If the world's land was distributed evenly between all humans how much would we all possess? This...
Why does a balloon travelling inside a car seem to violate Newton's laws? Imagine a toy helium...
I have conducted an experiment with a parachute. I was investigating whether the time taken to...
What is "time"? Does the word "time" in Physics have the same meaning as the word time in the...
from Vancouver, Canada
Are double yolked eggs ever viable? Can they be fertilized? If so are they to be fertilized once or...
from the Internet
What is inside an atom? In between the electrons and the neutron? Maybe if you pictured the atom as...
What do paper and plastic bags degrade to? How much does it cost to make a paper and plastic bag?
What is the difference between science and sciencing?
What are the urgent steps an undergrad must take to start researching? I am a high school graduate...
from Cobble Hill (Vancouver Island, B.C.)
I understand that cancer is caused by mutations in some of the genes that regulate cell growth and...
from Lengerich, Germany
I would like to know the amount of salt (either in ppm or %) in a normal human tear.
Why does salt melt ice?
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