Hello,

We noticed you're browsing in private or incognito mode.

To continue reading this article, please exit incognito mode or log in.

Not an Insider? Subscribe now for unlimited access to online articles.

Sustainable Energy

The Paris Climate Pact Is in Effect, but It’s Not Enough

Emissions goals put forth by most nations will come up short of saving the planet, unless governments double down on their commitments.

Less than a year after its inception, the Paris climate change agreement is officially in force—but the United Nations has warned that governments must dramatically reduce carbon emissions to meet its goals.

The agreement, drawn up last December, was formally ratified by enough nation-states last month. As of November 4, it’s binding for the countries that decided to sign up, which includes the U.S., China, and the members of the EU. Those countries must now endeavor to reduce their fossil-fuel use in order to limit average global temperature rises to less than 2 °C above preindustrial levels.

“This is a moment to celebrate,” said the United Nations’ climate chief Patricia Espinosa in a statement. She’s right: such large-scale international agreements are notoriously difficult to engineer. While negotiations were painful, the agreement is a beacon of hope for humankind, signaling that efforts will be made to mitigate the effects of climate change.

Patricia Espinosa, executive secretary of the United Nations Framework Convention on Climate Change, urged "sober assessment" over the task still ahead.

But Espinosa also warned that now is not a time for complacency. “It is also a moment to look ahead with sober assessment and renewed will over the task ahead,” she said. “In a short time … we need to see unprecedented reductions in greenhouse gas emissions and unequaled efforts to build societies that can resist rising climate impacts.”

In fact, a new UN report warns that the emissions pledges put forward by the countries to date don’t go far enough. It suggests that the emissions targets between now and 2030 will actually put the world on track to warm 3.4 °C by 2100. The report says that a further 25 percent reduction in emissions will be required to keep warming below 2 °C.

If officials seek a visceral reminder of how big an impact carbon dioxide emissions have on the planet, they have one in the shape of a new study published in Science about the impact of the gas on Arctic ice. Calculations suggest that three square meters of ice are lost for every ton of carbon dioxide emitted. That means the addition of another 1,000 gigatons of carbon dioxide into the atmosphere—about the amount that can be emitted before temperature rises exceed 2 °C—would render the Arctic ice-free during the summer.

As Espinosa says, the Paris agreement is good news. But we’re still a long way from where we need to be.

(Read more: Reuters, UN (PDF), Science, “The Paris Climate Pact Is Officially Go,” “Paris Climate Agreement Rests on Shaky Technological Foundations”)

Hear more about climate change at EmTech MIT 2017.

Register now
Patricia Espinosa, executive secretary of the United Nations Framework Convention on Climate Change, urged "sober assessment" over the task still ahead.

Uh oh–you've read all of your free articles for this month.

Insider Premium
$179.95/yr US PRICE

More from Sustainable Energy

Can we sustainably provide food, water, and energy to a growing population during a climate crisis?

Want more award-winning journalism? Subscribe to Insider Premium.
  • Insider Premium {! insider.prices.premium !}*

    {! insider.display.menuOptionsLabel !}

    Our award winning magazine, unlimited access to our story archive, special discounts to MIT Technology Review Events, and exclusive content.

    See details+

    What's Included

    Bimonthly magazine delivery and unlimited 24/7 access to MIT Technology Review’s website

    The Download: our daily newsletter of what's important in technology and innovation

    Access to the magazine PDF archive—thousands of articles going back to 1899 at your fingertips

    Special discounts to select partner offerings

    Discount to MIT Technology Review events

    Ad-free web experience

    First Look: exclusive early access to important stories, before they’re available to anyone else

    Insider Conversations: listen in on in-depth calls between our editors and today’s thought leaders

/
You've read all of your free articles this month. This is your last free article this month. You've read of free articles this month. or  for unlimited online access.