One Planet December 10, 2010 : 2:50 PM

The damage we do to our environment is not a localized problem, hence the need for global solutions. People thousands of miles away can damage locations with nearly no human presence. For example:

“Following in Edmund Hillary's footsteps? Don't drink the water on your way up. Dangerous levels of arsenic and cadmium have been found in snow samples from Mount Everest.”

“Both heavy metals were found at levels higher than those the US Environmental Protection Agency considers acceptable, says Samantha Langley-Turnbaugh of the University of Southern Maine in Gorham.”

“Langley-Turnbaugh's student Bill Yeo climbed most of the way up Everest in 2006, taking soil and snow samples every 300 metres between 5334 and 7772 metres up. All the snow samples had high levels of arsenic and cadmium, and all the soil samples had high levels of arsenic.”