On Saturday, April 26, 2014 6:02:30 AM UTC+1, Uncarollo2 wrote:
On Friday, April 25, 2014 11:48:36 PM UTC-5, Uncarollo2 wrote:

Consider this:







Humanity existed for over 200,000 years, hunting and gathering, before agriculture began. It became well-established on the order of 10,000 years ago, shortly after an unprecedented stability of the Earth's climate began as well (global average temperature varying only 3 degrees F for 10,000 years) . That is not a coincidence. The stable climate has allowed humanity to continue to farm and its population to increase to over 7 billion (that's a problem, but another discussion).







Climate change will kick the Earth out of this unusual equilibrium and return it to the wild temperature swings it used to experience (global average temperature varying as much as 20 degrees F, sometimes within a few decades), This instability would lead to crop failures and make reliable intensive agriculture unreliable, thus making a population anywhere near its current level virtually impossible. We will not be able to "adapt" to the changes, unless "we" constitutes a total population much smaller than today's.



Great charts and videos: http://svs.gsfc.nasa.gov/vis/a000000...674/index.html

Oh look Uncarollo,for $17 billion NASA has discovered the correct Equatorial speed of the Earth which cost me only $30 a month in internet charges.

"At the equator, the circumference of the Earth is 40,070 kilometers, and the day is 24 hours long so the speed is 1670 kilometers/hour ( 1070 miles/hr). This decreases by the cosine of your latitude so that at a latitude of 45 degrees, cos(45) = .707 and the speed is .707 x 1670 = 1180 kilometers/hr. You can use this formula to find the speed of rotation at any latitude." NASA

http://image.gsfc.nasa.gov/poetry/ask/a10840.html

NASA has managed to clean out its old 'solar vs sidereal' script to a large extent but there are still traces left -

"The Length of a Day
A sidereal (pronounced sigh-dear'-real) day refers to the rotation
of the Earth measured relative to the stars. It is the time it takes
the Earth to rotate 360 degrees and is equal to 23 hours, 56 minutes
and 4 seconds. " NASA

http://hypertextbook.com/facts/1999/JennyChen.shtml

http://liftoff.msfc.nasa.gov/academy.../sidereal.html


Have you all got the fact straight ? - when you wake up in the morning and watch the Sun appear you are watching a new rotation each 24 hours and they always,always keep in step.