Can you tell me what the exact pH of the acid in our stomach?
Why does an atom have neutrons and why does a specific atom have a limited amount of isotopes. For...
Why do we have five fingers? My idea is that one of nature's themes is "having enough." It's like a...
from Prince George, BC Canada
I need to know what happens to wood (softwoods, hardwoods and kiln dried woods) when they are...
When rockets were sent to Jupiter, did scientists get any readings?
Does Jupiter have a solid...
At what speed does the world's slowest living thing travel? And what is the world's slowest living...
from Los Angeles
Why do dry cell batteries (rechargeable) need to be fully drained before they can be recharged?
How can I find out whether it takes more effort (work by pump) to increase the air pressure in a...
Is it true that bats don't pass their food through but vomit it up while they are hanging upside...
Is gravity considered to be one of the forms of energy such as electricity, heat, light,...
from Andradas-MG- Brazil
When you squeeze out a piece of orange-peel on a flame, it catches fire violently. Why? What is...
What would make it possible for a man to move through solid objects? Is it at least in theory...
Are light and matter the same thing? Can you get matter from light?
Does antimatter's gravity have the same properties ordinary matter?
I am currently researching how sugar (sucrose) reacts with various chemicals. I am particularly...
How do antiperspirant products work? Could you use one on your chest to prevent sweating?
from lahore, pakistan
There is a controversy among my collegues that during agarose gel electrophoresis the band that...
Is a nerve impulse considered an electric current since it induces a magnetic field?
How would Giant Pandas being killed off affect my life?
Is it possible to test for, and diagnose, mitochondrial disorders, after death? How? Can this be...
Russell J. Wells Jr.
from Dearborn Hts., Mich.
Why is the efficiency of most all lasers limited to .1% to 30%? What are the limiting factors? What...
Grade One, Chesterville Public School
from Chesterville, Ontario
What do you feed baby praying mantises? We found a mother praying mantis who laid an egg sack on a...
How do you calculate potential energy for an object which is sitting on the floor? PE=mgh, which...
We want to know, when we burn NaCl, what happens to Cl?
I was wondering how I could test for things like heavy metals. How can I do that without paying for...
I am interested in finding more information on how to detect the presence of arsenic in the foods...
What is the structure of chicken bone?
I have a few questions regarding Space-Time that have always confused me. I would very much...
from Bergen, Norway
I came across a "water powered clock", and it can supposedly generate power from water alone. My...
My whole family plays hockey. We have frequently discussed how long of a shift should be and with...
If body temperature is 98.6 degrees, why does 98.6 degree water feel hot when you place it on your...
from the Internet
What makes classifying dogs in breeds different from classifying humans in races?
I thought that...
Why does HIV form resistance to ARV so quickly? HIV reproduces itself millions and millions of...
Is there any magnetic shielding material which is not itself attracted by a magnet?
Light cannot escape from a black hole, because of the black hole's mass. If this is true, then...
from Mill Valley, CA, USA
This came up during a homeschool astronomy lesson: Why does the back of the Moon not have large...
Is the interstellar space between the galaxies completely empty? Not even a single star or a nebula?
An article in the National Geographic magazine describes the Big Bang event as linear in form. Does...
How long would a single molecule of a radioactive element last?
If the half-life of U-235 reduces...
from Orange City, Florida
I have always heard that distilled water is a poor conductor of electricity. Is this true and if...
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