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Eco-photos of the week: May 24-30

By: Devereaux Bell on Oct. 16, 2009, 11:22 p.m.
Scientists examine melting permafrost

Photo: ZUMA Press

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As global warming melts Arctic permafrost, it gradually releases greenhouse gases like a "slow-motion time bomb." That time bomb may be more slo-mo than we previously thought, but it's no less dangerous. A study just published finds that the gases are initially absorbed by new plants.