Is the air we exhale pure carbon dioxide? If not, then what is it?
Can you explain where the "extra" ATP comes from in photosynthesis? As I understand it:
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...
Why do batteries behave differently when kept at different temperatures?
In my science project a...
What is the difference between fats and cholestrol?
from West Vancouver
(Re: E=Mc^2) Why does E/M=c^2 rather than simply c^1 (which is an altogether respectably large...
How would one maintain a bacterial culture without having to transfer cultures on a regular basis?
Is either Klebsiella pneumoniae or Serratia marcescens documented to be able to extract naked DNA...
from Brisbane, Queensland, Australia
How did we (as a race) evolve eyebrows and eyelashes. The way I understand it is that to evolve...
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 shells have nutrients in them? If so, what actually uses those nutrients?
At which age do the nasal bones and the mandible complete ossification?
Are there living beings which do not die?
Karl-Alexander Berg Brisebois
Conservation of momentum can explain the exchange of a virtual photon between two electrons and the...
Supposedly in classical electromagnetism an accelerating charge radiates. If so, why? If so, then...
from Hong Kong
1) Which of the following two options is more widely accepted by the scientific community? a)...
from Halifax, NS
I have a liquid crystal display screen computer monitor. I am looking for unbiased information on...
What chemical reaction takes place when you use henna to tint skin? Is it possible to extract the...
from Chilliwack, Canada
IF my blood type is A negative what are my parents' blood types? What does it mean to have negative...
How long does it take styrofoam to decompose? Are there chemicals that help to cause the...
What is immunofluorescence analysis, what basic materials are used, and how long does it take to...
Do all planets and stars rotate on themselves, and do we know why?
Lee Ming Fei
Why does chalk, a cylinder, always break into three pieces when it falls, and not into two or four...
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 Dayton, Ohio
I have been trying to find formulas for simple auto windshield washer fluid. Can't find anything....
from Delhi, INDIA
What are the ways in molecular biology to show confirmation of hybridization on a solid surface for...
Loubelle I. Depita
from Koronadal City, South Cotabato,Philippines
Why does nutrasweet or aspartame loses its effectiveness in cooking or in processes requiring...
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...
Why is Isobutane ( C4H8) a gas at 25 C and Dodecahedrane ( C20H20) a solid at 25 C?
I'm doing a science experiment with magnets and was wondering, do magnets lose their strength over...
D. Andrew White
Do different isotopes vary slightly in chemical properties? Or are they the same? i.e. are the...
Is it harmful to inhale sulfur which has been heated?
from Auckland, New Zealand
Is there an effective and affordable way to kill weeds on an organic basis? (i.e. vinegar?)
Does light exert force?
from Pune, India
1. I would like to know when was Hubble's constant discovered / invented?
2. How many times it...
from the Internet
Is the orbit of the moon around earth a perfect circle? If not, when is the moon closest to us? ...
from Morris Plains, NJ
Why is the helical content higher in gelatin with higher molecular weight. In other words, it seems...
Most often, your question can be answered by going to the following areas
If you have a different question, please search our archives
If your question has not already been answered, you may Ask-a-Scientist.
Created by the science.ca team, Copyright © 2001, 2015 GCS Research Society. Visitor agreement.