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How much methane do cows produce? The average
cow’s digestive tract releases 600 liters of methane per
day—enough to fill 40 party balloons!
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How long will the natural gas supplies in the U.S.
last? Based on the rate of current production of natural
gas, the U.S. supply is currently expected to last 66 years.
The U.S. actually ranks sixth in the size of its natural gas
reserves. Russia has tremendous reserves (1,700 trillion cu.ft.),
followed by Iran (812.3 trillion cu.ft.), Qatar (300 trillion
cu.ft.), United Arab Emirates (212 trillion cu. ft.), Saudi
Arabia (204.5 trillion cu.ft.), and the United States (167.4
trillion cu.ft.).
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Who invented rotary drills? The Egyptians
are credited with a first in drilling technology: they used
rotary drilling mechanisms as early as 3000 B.C. In 1500 A.D.,
Leonardo da Vinci developed a design for a drilling rig that
is similar to many of those in use today to locate natural gas
deposits.
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