simple way to extract it from soil or water.
132882
Extracting Methane from Water?\n\nUsually, there isnt much methane in water.  Methane, being a non-polar Hydrocarbon, does not readily dissolve in polar solvents like water.\nHowever, if by chance you actually did have some CH4 dissolved in water, a gas' solubility in water decreases as pressure decrease and temperature increases, so by boiling the water and/or lowering the atmospheric pressure above the liquid, the methane can be removed.
669421
What extract are you talking about? Different materials require different extraction methods.
464527
run one end of it through a paper shredder.
311889
2H2 + O2 ---- 2 H2O\n\nYou can easily obtain water around the house.
649340
Investigate a cheap way to extract hydrogen from water. If you find a way to extract hydrogen from water that is cheaper than extracting oil from the ground, you will become filthy rich.
556629
Get a shovel and throw it into an outside dumpster
171146
Try this website; it has several links:\nhttp://www.answers.com/main/ntquery?s=Methods+of+soil+testing&gwp=11&ver=1.0.2.84&method=2
580503
peee in a plastic bag  then throw it some where
126515
Purify it. And then have it in a closed system where nothing can get to it
426300
The answer lies in the soil,
69117
just start digging up weeds ;)
52880
gather some leaves. put them in a metal drum after wetting them. wait until the leaves are decomposed - what remains is a compost fertilizer
629123
Cover it with your hands very slowly and trap it. Then take it down to your pool if you have one or fill up a cup of water
498829
easiest thing ever is plants. Get 3 plants and water them with regular water, and 3 other plants and water them with regular water and add fertilizer like Miracle Grow, then 3 more and water them with sugar-water. then hypothesize which will grow better.
255975
Scooping up cr@p from animals on a farm!
586680
Easiest way is to put the light source as far as possible yet reachable, so plant tends to elongate itself in order to get the ligth
442938
CO2. and you can also use vinegar.