Louvre in Paris, France.

París y el destino de la Tierra

PRINCETON – Las vidas de miles de millones de personas, durante los siglos por venir, estarán en juego cuando los dirigentes del mundo y los negociadores gubernamentales se reúnan en la Conferencia de las Naciones sobre el Cambio Climático que se celebrará en París al final de este mes. El destino de un número desconocido de especies de plantas y animales pende también en la balanza.

En la Cumbre de la Tierra, celebrada en Río de Janeiro en 1992, 189 países, incluidos los Estados Unidos, China, la India y todos los países europeos subscribieron la Convención Marco de las Naciones Unidas sobre el Cambo Climático y acordaron estabilizar las emisiones de los gases que provocan el efecto de invernadero “en un nivel lo suficientemente bajo para prevenir una peligrosa interferencia antropogénica en el sistema del clima”.

Sin embargo, hasta ahora no se ha producido dicha estabilización y, sin ella, los bucles de retroalimentación climáticos podrían impulsar el aumento de las temperaturas aún más. Con menos hielo ártico que refleje la luz del Sol, los océanos absorberán más calor. El deshielo del gelisuelo siberiano liberará enormes cantidades de metano. A consecuencia de ello, zonas enormes de nuestro planeta, que actualmente albergan a miles de millones de personas, podrían resultar inhabitables.

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