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Nature and Science 07/21/2012 Chemical conundrum

07-21-2012 18:08 BJT

1、Tollund Man was unearthed in a Danish peat bog perfectly preserved even though he died in the century before Christ. He is exactly the same as a contemporary human in every respect save one: his body contains no chemicals. We are host to many chemicals that arrive in our bodies through numerous pathways. We don''t like chemicals, they''re everywhere, in us all, and seemingly poisonous. Most man-made chemicals have yet to be tested for toxicity. Yet we''re living longer, healthier lives than our Iron Age forebears. So does a chemically polluted world matter? 2、Scientists at the NASA Earth Observatory estimate that If the current rate of deforestation continues, the world''s rain forests will vanish within 100 years. Tracking the rainforest by satellite, the destruction, they say, will cause unquantifiable effects on global climate and eliminate the majority of plant and animal species on the planet. According to WWF, Indonesia once had the most bio-diverse rainforests in the world. But today they are being destroyed faster than anywhere else on earth.

Editor:James |Source: CNTV

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