What are the most recent theories about what existed before our big bang? Have there been one or...
from the Internet
Is the orbit of the moon around earth a perfect circle? If not, when is the moon closest to us? ...
How does a lightstick work, and what are the chemicals involved?
from Guwahati, Assam, India
Just like 1 mole of water contains Avogadros number of molecules and has the same mass as that of...
Why are there no penguins in the Arctic, or anywhere in the Northern Hemisphere?
Can you tell me what the exact pH of the acid in our stomach?
Does light exert force?
justine van der Werf
I have read that when oxygen is condensed to a liquid state, or indeed to a solid state it becomes...
How would Giant Pandas being killed off affect my life?
When and how was the kaleidoscope made?
Loubelle I. Depita
from Koronadal City, South Cotabato, Philippines
Why are egg & milk used as antidotes for heavy metal poisoning and what other household remedies...
Lee Ming Fei
Why does chalk, a cylinder, always break into three pieces when it falls, and not into two or four...
Why do we have five fingers? My idea is that one of nature's themes is "having enough." It's like a...
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...
When does each organ system of the human body reach full maturity?
from Andradas-MG- Brazil
When you squeeze out a piece of orange-peel on a flame, it catches fire violently. Why? What is...
from Los Angeles
Why do dry cell batteries (rechargeable) need to be fully drained before they can be recharged?
I am doing some research on microarrays. I wish to know if mRNA's also have open reading frames as...
from Morris Plains, NJ
Why is the helical content higher in gelatin with higher molecular weight. In other words, it seems...
Can air in the pleural cavity cause the lungs to expand more fully than they normally would?
from lahore, pakistan
There is a controversy among my collegues that during agarose gel electrophoresis the band that...
How can I find out whether it takes more effort (work by pump) to increase the air pressure in a...
I am interested in finding more information on how to detect the presence of arsenic in the foods...
I've been doing a science fair project testing the effectiveness of Lactaid(TM) lactase. From a...
Are light and matter the same thing? Can you get matter from light?
What kind of weather is on Mercury and Saturn? Does it rain or snow on these planets?
What is the structure of chicken bone?
In science fiction it is common to see P-P fusion, but my reading seems to indicate it is...
Is gravity considered to be one of the forms of energy such as electricity, heat, light,...
Why does HIV form resistance to ARV so quickly? HIV reproduces itself millions and millions of...
Is it possible to test for, and diagnose, mitochondrial disorders, after death? How? Can this be...
If neutrinos have mass, as now seems to be the case, they cannot travel at the speed of light …...
Specific tissues are meant to perform specific functions. Is it possible to transfer different...
If a sound is played to a person over a period of time, is there a way to work out (or to estimate)...
Why do wet objects shine?
from Orange City, Florida
I have always heard that distilled water is a poor conductor of electricity. Is this true and if...
How does nicotine affect the growth rate of a plant? If you were to put a cigarette in the soil of...
We want to know, when we burn NaCl, what happens to Cl?
In Chemistry today, we learned that when HCl is ionized in water, the H2O becomes H3O+, because of...
How can you extract the bacteriocins (colicins) from E. Coli? I would like to test the...
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