Paul Bledsoe

Este archivo solo abarca los artículos del autor incorporados a este sitio a partir del 1 de diciembre de 2006. Para fechas anteriores realice una búsqueda entrecomillando su nombre.

ReflexionesNaturaleza,  

Si los años de sequías, inundaciones, olas de calor e incendios forestales devastadores ocurridos desde que se adoptó el Acuerdo de París nos han enseñado algo, es que hemos subestimado la velocidad del cambio climático extremo y desestabilizador.

El mundo se ha calentado alrededor de 1,1 grados Celsius con respecto a los niveles preindustriales, en gran medida esto ocurre desde 1950, y las temperaturas siguen en ascenso. Por eso era tan importante que más de cien países se sumaran la semana pasada a una coalición encabezada por Estados Unidos y la Unión Europea para reducir las emisiones mundiales de metano, un potente gas de efecto invernadero, en al menos un 30 por ciento para 2030.…  Seguir leyendo »

ReflexionesNaturaleza,  

If the years of devastating droughts, floods, heat waves and wildfires since the Paris climate agreement was adopted have taught us anything, it’s that we have underestimated the pace of extreme, destabilizing climate change.

The world has warmed by about 1.1 degrees Celsius from preindustrial levels, much of it occurring since 1950, and the pace continues. That’s why it was so important that more than 100 countries joined a coalition led by the United States and the European Union last week to cut global emissions of the potent greenhouse gas methane by at least 30 percent by 2030.

But delegates meeting at a world climate conference in Glasgow have more to do: For the security of the planet, they need to act further and faster to limit near-term temperature increases.…  Seguir leyendo »

Sea ice in the Beaufort Sea off the coast of the Arctic National Wildlife Refuge in June. Credit Christopher Miller for The New York Times

ReflexionesNaturaleza, ,

Delegates from nearly every nation spent the last two weeks here at a United Nations climate summit struggling to chart a course to meet the extraordinarily difficult goal of net zero emissions of carbon dioxide by the year 2050.

Yet long before then, the effects of global warming could spin out of control. As the United Nations’ secretary general, António Guterres, warned in opening the meeting: “The point of no return is no longer over the horizon. It is in sight and hurtling toward us.”

Perhaps nowhere is that more true than in the Arctic. The surface air there is warming at twice the global rate and temperatures over the past five years have exceeded all previous records since 1900.…  Seguir leyendo »

MundoAméricaMundoAsia, , ,

With more than a million people in China dying prematurely each year from breathing its dirty air, and with warming temperatures portending rising sea levels and disruptions to food production, the centrally planned Communist country is experimenting with a capitalist approach to address the problem: it is creating incentives so that the market — and not the government — will force reductions in emissions.

The United States invented this approach in the 1990s to deal with acid rain. The effort was tremendously successful in reducing sulfur dioxide emissions that were poisoning lakes and streams, contaminating soils and accelerating the decay of buildings, at a cost lower than even its advocates anticipated.…  Seguir leyendo »