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Hope Mine cleanup demonstrates power of biochar

A new generation of pioneers have struck proverbial gold at an abandoned silver mine near Aspen. What was once a wasteland of arsenic, cadmium, lead and zinc on a steep mountainside that abuts Castle Creek is now a haven for natural grasses and wildflowers that have stabilized the slope and drastically reduced the risk of the heavy metals crashing into the city's main water supply.

Vilsack earns green brownie points on biochar, Colorado roadless rule

Agriculture Secretary Tom Vilsack has been making the rounds in Colorado the last couple of days, earning points from enviros at the North American...

Vilsack to keynote North American Biochar conference in Boulder

U.S. Secretary of Agriculture Tom Vilsack will be the keynote speaker Monday evening, Aug. 10, at the North American Biochar conference at the University...