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Australian heatwave shows man-made climate change, scientists say

Southern Australia is caught in the grip of an extreme heatwave, which is fuelling hundreds of bush fires, causing power cuts and even prompting concerns about the safety of tennis players in the Australian Open, which is being staged in Melbourne. Scientists say these heatwaves are one of the clearest examples of man-made climate change beginning to stand out from natural climate variability.

Temperatures climbed above 40C in Melbourne on Wednesday for a second successive day forcing at least one more player to retire and prompting a debate about whether it is simply too hot to play tennis during the afternoon. The forecast for Thursday is 44C.

The polar vortex in no way disproves climate change

Almost half of the Lower 48 will shiver under sub-zero wind chills Tuesday morning. Countless records will be set. Yet none of that means a thing about the existence of climate change, its severity or its consequences.

November Was Cold, But the Climate Keeps Warming

Global warming is a misnomer. “Warming” makes it sound as if the climate will get hotter at a steady, predictable pace—like a pot of soup heating on the stove. But that’s not how our enormously complex climate system works. The increasing concentration of carbon dioxide and other warming gases in the atmosphere is just one of many factors affecting the global climate—including the natural year-to-year variability that has always been at work. Over the short term, temperatures can rise and fall like the fluctuating value of a single company in the stock market. But the long-term trends—the important trends—remain unchanged.

Why climate change threatens Peru’s poverty reduction mission

The Peruvian Amazon became a net emitter of carbon dioxide rather than oxygen for the first time in 2012, according to the UN Development Programme’s (UNDP) latest human development country report. The reversal of the rainforest’s usual role as a carbon sink is a direct result of the droughts in the western Amazon in 2005 and 2010 – and a stark reminder, say scientists, that this mega-biodiverse country is highly vulnerable to climate change.

C40 City Diplomacy Addresses Climate Change

The geopolitical configuration that emerged after the end of the Cold War has been redefining the world stage. In recent decades, we have observed the fall of decaying political superpowers, the territorial redesign of countries and institutions and were taken unawares with the meteoric ascent of emerging economies. The old binary system is long gone. In this increasingly multipolar arena, new players have risen onto the scene — the cities.