PARIS — First, the good news. On Saturday afternoon, world leaders ratified a universal pact to slow global warming, ending a decades-long political stalemate and, according to the best possible science, lowering the risk of ecological collapse.
The decisive moment arrived inside a high-security airplane hangar on the outskirts of Paris, where delegates from nearly 200 nations fought over the deal line by line for two weeks. Finally, the French foreign minister called an all-hands meeting, and asked if there were any objections to the final 31-page agreement.
Seeing and hearing none, he banged a tiny green gavel, sealing the deal into international law. The room erupted in a man-on-the-moon-like moment of rapturous applause. The online world followed.
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President Barack Obama praised the deal as “the most ambitious climate change agreement in history.” “Beautiful,” added French president Francois Hollande. “I used to say we must,” commented Christiana Figueres, the United Nation’s climate chief. “Today, we can say we did!”
The agreement commits the world to hold “the increase in the global average temperature to well below 2°C above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5°C above pre-industrial levels.” That’s an ambitious goal here in 2015, which is expected to be the hottest year on record, amid the three hottest decades on record.
The agreement also commits the world to a “global peaking of greenhouse gas emissions as soon as possible,” and “rapid reductions thereafter.” That could spell the end of the fossil fuel era, since the primary source of those emissions is oil, coal, and gas.
Finally, the agreement pledges a minimum of $100 billion a year for developing countries to adapt to the ravages of our already overheated climate. That’s an acknowledgement of the vast inequities of climate change: The fact that the richest, most powerful countries have done the most to cause climate change, yet suffer the least as a result.
But there’s a whole lot of bad news in this agreement, as well: It’s vague. It’s aspirational. And critics say it’s several orders of magnitude away from being enough to avert a crisis in the decades ahead.
“The Paris Climate Agreement is not a fair, just or science-based deal,” said Erich Pica, president of the eco-watchdog group Friends of the Earth. “The result is in an agreement that could see low-lying islands and coastlines swallowed up by the sea, and many African lands ravaged by drought.”
Take the long-term temperature goal of global warming “well below” 2 degrees Celsius, which is 3.6 degrees Fahrenheit.
We’ve already warmed more than half that much, and the national emission pledges in Paris put the world on track for more warming still. If fully implemented, the Paris agreement would warm the earth between 2.5 and 3.7 degrees Celsius, according to independent analysis recognized by the United Nations.
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That’s a range that risks “irreversible” damage to the Earth’s system, according to the Intergovernmental Panel on Climate Change, which is why activists flooded central Paris even as diplomats celebrated a few miles away. In rallies near the The Arc de Triomphe and the Eiffel Tower, thousands of people unfurled long red banners to symbolize the “red lines” crossed by negotiators.
“It’s what we expected,” the author and activist Bill McKibben said of the deal. “It’s like a very fat man announced that he’s going on a diet but never changed a thing about the way he eats. Our job, the job of the climate movement, is the same: We’re the fat man’s personal trainer.”
The pledge to reach a “global peaking of greenhouse gas emissions” as soon as possible is also shaky, McKibben and others noted. It does nothing to control the burning of fossil fuels, which already exist in quantities large enough to melt all the ice in Antarctica, according to climate scientists.








