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....
A: One acre is equal to 0.0016 square miles. The value is also equivalent to 4,840 square yards, 43,560 square feet, 0.004047 square kilometers or 4,046.86 square meters.