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...
What is the difference between animal hibernation and a human coma? These states appear similar,...
How do we explain the difference between cells that can repair damaged tissue, such as skin cells,...
How do you know what size lobsters should be released instead of taken, in order to ensure the...
Is the air we exhale pure carbon dioxide? If not, then what is it?
How would one maintain a bacterial culture without having to transfer cultures on a regular basis?
What is the difference between fats and cholestrol?
Why do batteries behave differently when kept at different temperatures?
In my science project a...
from Hong Kong
1) Which of the following two options is more widely accepted by the scientific community? a)...
from West Vancouver
(Re: E=Mc^2) Why does E/M=c^2 rather than simply c^1 (which is an altogether respectably large...
from Brisbane, Queensland, Australia
How did we (as a race) evolve eyebrows and eyelashes. The way I understand it is that to evolve...
Do shells have nutrients in them? If so, what actually uses those nutrients?
Is either Klebsiella pneumoniae or Serratia marcescens documented to be able to extract naked DNA...
Karl-Alexander Berg Brisebois
Conservation of momentum can explain the exchange of a virtual photon between two electrons and the...
from Berkeley, CA
I understand why magnetism is a relativistic effect, "caused" by Lorenz contraction effectively...
If light is made of photons, and photons have mass, and many photons of light are hitting the earth...
Do all planets and stars rotate on themselves, and do we know why?
Supposedly in classical electromagnetism an accelerating charge radiates. If so, why? If so, then...
At which age do the nasal bones and the mandible complete ossification?
Are there living beings which do not die?
from Halifax, NS
I have a liquid crystal display screen computer monitor. I am looking for unbiased information on...
Lee Ming Fei
Why does chalk, a cylinder, always break into three pieces when it falls, and not into two or four...
from Dayton, Ohio
I have been trying to find formulas for simple auto windshield washer fluid. Can't find anything....
What chemical reaction takes place when you use henna to tint skin? Is it possible to extract the...
How long does it take styrofoam to decompose? Are there chemicals that help to cause the...
from Pune, India
1. I would like to know when was Hubble's constant discovered / invented?
2. How many times it...
Why is Isobutane ( C4H8) a gas at 25 C and Dodecahedrane ( C20H20) a solid at 25 C?
from Chilliwack, Canada
IF my blood type is A negative what are my parents' blood types? What does it mean to have negative...
Does light exert force?
What is immunofluorescence analysis, what basic materials are used, and how long does it take to...
A black hole is a central point the size of a pinhead where a huge amount of mass is concentrated....
from Denver, CO
When eating spicy foods, the tongue and lips can get a burning sensation. Why don't the insides of...
from the Internet
Is the orbit of the moon around earth a perfect circle? If not, when is the moon closest to us? ...
Is it harmful to inhale sulfur which has been heated?
from Delhi, INDIA
What are the ways in molecular biology to show confirmation of hybridization on a solid surface for...
Sylvain Koenig from the University of Lausanne (Switzerland)
Why would one person when he returns from travel at the speed of light have aged differently than...
from Morris Plains, NJ
Why is the helical content higher in gelatin with higher molecular weight. In other words, it seems...
I'm doing a science experiment with magnets and was wondering, do magnets lose their strength over...
If a sound is played to a person over a period of time, is there a way to work out (or to estimate)...
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