La solución barata y efectiva del calentamiento global

COPENHAGUE – El calentamiento global implicará que más gente muera como consecuencia del calor. Habrá un aumento en los niveles del mar, más malaria, hambre y pobreza. La preocupación ha sido grande, pero la humanidad ha hecho muy poco para impedir realmente que se produzcan estos desenlaces. Las emisiones de carbono han seguido aumentando, a pesar de las repetidas promesas de recortes.

Todos tenemos la responsabilidad de asegurar que se frene el cambio climático. Recurrimos a los científicos del clima para que nos informen sobre el problema del calentamiento global. Ahora necesitamos recurrir a los economistas del clima para que nos iluminen sobre los beneficios, costos y posibles resultados de las diferentes respuestas a este desafío.

Los líderes mundiales se reúnen en Copenhague en diciembre para forjar un nuevo pacto para enfrentar el calentamiento global. ¿Deberían seguir adelante con los planes de hacer promesas de reducir las emisiones de carbono que son improbables de cumplir? ¿Deberían en cambio postergar las reducciones por 20 años? ¿Qué se podría lograr si se plantaran más árboles, se recortaran las emisiones de metano o se redujeran las emisiones de hollín negro? ¿Es sensato concentrarse en una solución tecnológica para el calentamiento? ¿O deberíamos adaptarnos a un mundo más cálido?

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