Human-made toxic pollutants found in deepest point on Earth

Scientists have found ''extraordinary'' levels of toxic pollutants in the 10-km-deep Mariana trench in the Pacific Ocean, the deepest known point on the planet. Small crabs captured from Mariana were found to be 50 times more contaminated than those surviving in China's industrially polluted rivers. The significant and disturbing results show no place is safe from human impact, said scientists.