Costa Rica has…pledg[ed] to become one of the only developing nations to make itself "carbon neutral".…[But] President Oscar Arias…recently lifted a ban on open-pit mining…likely to result in the largest such gold mine in Central America, Las Crucitas, to be operated by a Canadian-owned firm, Infinito which will require clearing 125 acres…of forest land…[with] environmentalists…warning of a…eco-catastrophe in the event of cyanide leaks into the San Juan River… Rather than attack emissions… at its industrial and automotive sources, eco-advocates fear Arias simply wants to plant more trees in order to create what they call a deceptive net-zero emissions balance…leav[ing] venues like the capital of San Jose "choking" with…pollution.