The Marlin gold mine in Guatemala, about 50 miles from the border with Mexico, promised economic opportunities that never materialized for the Mayan population there. Now Mayan community leaders are protesting toxic pollution they say has caused health problems.

"SEATTLE — Two coalitions of environmental groups have filed three separate suits against the U.S. Forest Service, hoping to stop what the organizations say is the largest sale of old-growth timber in nearly a generation in America's largest national forest."

"An activist’s controversial crusade against genetically modified crops."

"Keith Kloor's interesting piece in The Washington Post Magazine on Robert F. Kennedy Jr.'s anti-vaccine crusade includes this interesting fact: 'All six of his children--ages 13-29--have been fully vaccinated.'"

"Twenty-one activists were arrested Monday during a "blockade" of a tar sands company’s construction equipment in eastern Utah, according to anti-tar sands groups who accused Uintah County sheriff’s deputies of 'brutality.'"

"BOGOTA, Colombia — Cesar Florez is often hesitant to answer his phone because there might be another death threat at the end of the line. Sometimes the threat comes in a phone call, other times in a text message or an email. In April, flyers were posted in the restroom stalls at Florez’s workplace, declaring him and his colleagues 'permanent military targets.'"

"John Christy, a professor of atmospheric science at the University of Alabama here, says he remembers the morning he spotted a well-known colleague at a gathering of climate experts."

"Two dozen protesters were arrested in Washington on Monday while demonstrating against hydraulic fracturing and the U.S. gas industry's push to sell "fracked" liquefied natural gas abroad."

"WASHINGTON — In November 2010, three combatants gathered in a sleek office here to build a carbon emissions policy that they hoped to sell to the Obama administration."