Courtesy Reuters

The Earth is one ecological unit. The student of disease pandemics-cholera, plague, influenza-has long understood that the world is bound by bacterial bonds. When the volcano Krakatoa exploded in the Dutch East Indies in August 1883, the sun was darkened by the debris scattered across oceans and the roar was heard in Japan and the Philippines. Earthquakes in Japan have affected the levels of wells in California and Texas. In July 1968, it was reported that violent rains and winds in England brought airborne red silts from the Sahara Desert.

Whenever man eats, drinks, works, fights or plays he creates modifications in

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