by Myriam LEMETAYER Agence France Presse Beaumontois-en-Périgord, France (AFP) — A French farmer steps away from his barn and fills up a tractor with fuel made from the manure of his cows, an attempt to put their climate-damaging methane to good use. Anchored by a stone farmhouse, much has changed on the Guerin family farm in the southern Dordogne region since its founding in 1926. The cow barn is largely automated, and features two huge, […]