from London, England
How many active volcanoes are there at any onetime on the Earth, and how much "Greenhouse" gas do...
What is your personal view of global warming? Do you believe that humans are having a significant...
from the Internet
What must occur for two parents with blood type AB to have a child with blood type O?
I have blue eyes and am the mother of a son who has blue eyes as well. His father has brown eyes....
If matter expands when heated, and contracts when cooled, why does ice expand when water freezes? ...
Is snow a conductor or an insulator?
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?
Why is the sound of fingernails scratching against a chalkboard so irritating to listen to?
Do the cells in the heart tissue know if there is something wrong with the heart. If so, how do the...
from Kooskia, ID
I have spent 4-5 hrs. attempting to magnetize some iron (Fe) washers using a 12V battery and...
Why can't an insect grow large enough to terrorize a city?
Are we the center of the Universe? Does it always appear to an observer that he/she is at the...
Why doesn't a neon sign finally "run out" of exited atoms and produce dimmer and dimmer light?
How long can someone sustain without sleep? What factors would change that number of hours or days?...
What is the difference between science and sciencing?
from Timmins, Ontario Canada
My son, age 12 is asking for a chemistry set for Christmas. This is an area that has always...
from Limerick Republic of Ireland
How much heat energy (watts) is released from the human body? Is there a relation to the area of...
What's smaller, a quark or a neutrino?
from Kingston, ONTARIO, CANADA
We have an older pop machine at work with canned soft drinks. Sometimes, when a pop is opened that...
Electricity. It powers almost all household appliances as well as the complex electronics we rely...
from Cold Spring
Why does phenolphthalein turn pink with a base? I know it has something to do with light, but i...
What does cytoplasm do in the cell?
Why does salt melt ice?
from Markham, Ontario, Canada, Amérique du Nord
I was and I still am wondering if there are any really complex questions that even scientists...
Why does a digital camera need a shutter- I think it should be able to electronically shunt the...
Approximately how many nuclear tests do the americans alone conduct every year?
Physicians often want to know the glucose and lipid levels in a patient's blood and whether...
I have conducted an experiment with a parachute. I was investigating whether the time taken to...
Why does a balloon travelling inside a car seem to violate Newton's laws? Imagine a toy helium...
What happens when you use ethanol (unblended) in a standard, unleaded car engine? Will it work?
from New Delhi
How did scientists conclude that a major part of our genome is junk? Did they search for open...
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 Seattle, WA
How many scientists does Canada have?
from Vancouver, Canada
Are double yolked eggs ever viable? Can they be fertilized? If so are they to be fertilized once or...
Since the Big Bang we see (with Hubert Reeves and other scientists) that matter has a tendency to...
from Orland Park
What process does a jellyfish go through when it stings something?
from Durham, UK
If the world's land was distributed evenly between all humans how much would we all possess? This...
I am curious. What if two magnetic field lines were to intersect each other? What would this imply...
I heard that if you set fire to methylated spirit, it will catch fire, but nothing around it will...
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