Psoriasis & Psoriatic Arthritis (for at least a decade now) have led me to Humira. The results have been super since I began a few years ago. Brown spots, freckle sized, have appeared in the areas where the Psoriasis was. No one has any idea from Drs to pharmacists. .
In 2006, there was 1.15 acres of arable land per person, world-wide (i.e. 7.68 billion acres / 6.68 billion people). By 2039, there may be only 0.59 acres of arable land per person, world-wide (i.e. 7.68 billion acres / 13 billion people). Source(s): http://one-simple-idea.com/Environment1....
The Earth's Diameter is 7926.41 miles. The surface area of Earth is (pi x Diameter) = 197.38 million square miles (where pi = 3.14159265358979). However, the Earth only has 57 million square miles of land (that's 36.48 billion acres; there are 640 acres per square mile). However, there are only 12 million square miles (7.68 billion acres) of arable land.