Drones around prisons are bad

The Monitor has a good story today about the concern that prisons have with drones dropping contraband into the prison yard: “On nine separate occasions over the last six months, corrections workers spotted a drone flying over the (state prison in Concord),...

How carbon-neutral is biomass energy? It’s complicated

It’s obvious that burning trees for heat or to create electricity is better from a greenhouse-gas point of view than burning coal and oil, because the trees can regrow and pull back the the carbon they released into the air. Or maybe it’s not so obvious,...

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