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COPENHAGUE – El escepticismo público frente al calentamiento global puede estar aumentando, pero el consenso científico es tan sólido como siempre: el cambio climático generado por el hombre es real y lo ignoramos a costa nuestra. Pero si se aclara esa cuestión (como debería suceder), existe un interrogante igualmente grande e importante que sigue abierto: ¿qué deberíamos hacer al respecto?
Una receta que circula cada vez con más frecuencia parece verdaderamente sensata: el mundo debería reducir drásticamente la cantidad de gases de tipo invernadero que envía a la atmósfera a diario. Específicamente, nos dicen, el objetivo debería ser una reducción del 50% en las emisiones globales de dióxido de carbono para mediados de siglo.
Hasta quienes respaldan esta receta admiten que lograr ese objetivo no será fácil –y tienen razón-. De hecho, tienen tanta razón que se equivocan. Permítanme explicar.
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