from Alexandria, VA, USA
What is the relationship between rain intensity/rain rate and visibility? What resources can I...
from Chesapeake, VA
I teach moon phases to my third graders. On posters, in textbooks, and online, I have seen...
from San Antonio, Texas
What is the volume of breathable air on the earth? Perhaps as one atmosphere?
from San Diego/California
Why does Aspartame taste so sweet? What is the chemistry involved in something that tastes sweet?
Is there any evidence that the Green House Effect is not caused by industral gas emissions?
from Glandorf, OH
Can you please tell me what the basic preservatives are in the following breads: white, wheat,...
If air is a gas, and gas explodes when heated (in an eclosed space, the atmosphere), does that mean...
Why does lake water change temperature at a slower rate than the ground?
I would like to know how much oxygen is in our breathable air, and also if it has ever been 50%. If...
How does the sensory memory help us to hear, read and understand whole sentences? For example. when...
from Bakersfield, CA
Do neutron stars evolve further? Charts of star evolution always show the neuton star as the last...
How did dinosaurs die? If they died due to a comet impact on the Earth there will be dust...
from Antigonish, Nova Scotia
How does the earth stay in the same place in space?
How does a atom split and how does it create such a big explosion? Also how can I split an atom at...
Why can't spruce trees compete with maple trees in more southern forests? What advantages do the...
I heard that mountain chains (from continental collisions) could (thanks to their weight +...
from Port Hardy, BC
Where did Albert Einstien live?
What are the globes which, when you puts your hand close to them, display electrical energy...
from the Internet
Can any plants regenerate after they are totally dried - I don't mean somatic embryogenesis: can...
My son is doing a herptiles of ontario project and this a missing link question: Do you think...
Last year a friend of mine widened and deepened an existing pond on his property. A considerable...
What would be the appearance of the moon if it were in the western sky just after sunset? Why would...
from Staten Island
How much energy did the highest energy neutrino detected so far have?
from the Internet
Why doesn't pepsin break down gelatin on developed photographic film or does it just take a very...
from the Internet
Many people add mustard to salad dressing (oil and vinegar) in order to render the two usually...
Do all antibacterial soaps kill bacteria? How do you test if they do?
from Withernsea, Yorkshire, England
Many people say there are 5 senses in the body but I am arguing with my mum here that there are...
from Oakville, Ontario
I was watching a program about sleep-walking and they were saying something about how dreams were...
How do split ends affect the way your hair grows? Why do people say that when you have split ends,...
from Melbourne (Australia)
Is blood more complex than just the four groups? How?
Also, what structures allow humans to have...
Why did Canada pull out of the ITER fusion project, and what, if any, research is Canada...
Why do magnets erase magnetically recorded data? Are there some generally accepted guidelines for...
Why do some people use salt to kill weeds? What does salt do that makes the weeds die?
from Mississauga, Ontario
I am really interested in chemistry and I was wondering where I would be able to purchase some of...
Why does uracil replace thymine in RNA?
When a baby is formed it starts out as one cell then splits and reproduces and forms perhaps...
Is the air we exhale pure carbon dioxide? If not, then what is it?
Why do batteries behave differently when kept at different temperatures?
In my science project a...
How do you know what size lobsters should be released instead of taken, in order to ensure the...
What's a gathering of frogs called? What's a gathering of toads called?
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