A month and half old female Asiatic elephant walks in Ostrava Zoo, May 31, 2011.[Photo/Agencies]

A farmer walks past a terrace of codonopsis pilosula, a traditional Chinese medicine also known as dang shen, in Min county, Gansu province May 31, 2011. Rows of white plastic shields have been installed to protect the roots of the dang shen to keep it warm and moist. Commonly used as a cheaper substitute for ginseng, the herb is believed to lower blood pressure, boost one's immune system and improve appetite. [Photo/Agencies]