On 22 April 2016, in an attempt to prevent global temperatures from raising to 2°C above pre-industrial levels, the world’s largest emitters of greenhouse gases banded together to strike the Paris Agreement.
It was a shining example of global cooperation, that is, until US president Donald Trump indicated in June that the US will be pulling out.
If all countries implemented their commitments under the agreement, global greenhouse gas emissions would peak over the coming decade before returning to close to their current level in 2030. Global temperatures would still be rising, but at a constant rather than an exponentially increasing rate if nothing were to be done. Crucially, the agreement accepts that to stop the warming, net global emissions need to be reduced to zero. It also sets up a mechanism for progressively more ambitious reductions through a periodic ‘stock take’, with the first scheduled to be completed in 2023. Right now, the US accounts for about 12 per cent of global emissions, but if other countries cut back while the US keeps its carbon footprint stomping along at a steady ‘business as usual’ clip, then that fraction will rise. The result: we will never reduce emissions to zero, and temperatures will keep rising.
この記事は BBC Earth の October 2017 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
すでに購読者です ? サインイン
この記事は BBC Earth の October 2017 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
すでに購読者です? サインイン
World's First Malaria Vaccine
The World Health Organization’s director-general hails ‘historic moment’ as mass immunisation of African children begins
Is River Pollution Putting The Species In Jeopardy Again?
Ten years ago, it was jubilantly announced that o ers had returned to every county in England. But is river pollution putting the species in jeopardy again?
The Big Burnout
Long hours, low pay and a lack of appreciation — among other things — can make for a stressful workplace and lead to burnout. It’s something we should all be concerned about, because over half of the workforce reports feeling it
Putting Nature To Rights
More countries are enshrining the right to a clean environment into law. So if a company or government is impinging upon that right, you could take them to court
Mega Spaceship: Is It Possible For China To Build A Kilometre-Long Spacecraft?
Buoyed on by its successful Moon missions, China has launched a five-year study to investigate the possibility of building the biggest-ever spacecraft
Are We Getting Happier?
Enjoying more good days than bad? Feel like that bounce in your step’s getting bigger? HELEN RUSSELL looks into whether we’re all feeling more cheery…
“Unless the Japanese got the US off their backs in the Pacific, they believed they would face complete destruction”
Eighty years ago Japan’s surprise raid on Pearl Harbor forced the US offthe fence and into the Second World War. Ellie Cawthorne is making a new HistoryExtra podcast series about the attack, and she spoke to Christopher Harding about the long roots of Japan’s disastrous decision
Your Mysterious Brain
Science has mapped the surface of Mars and translated the code for life. By comparison, we know next to nothing about what’s between our ears. Over the next few pages, we ask leading scientists to answer some of the most important questions about our brains…
Why Do We Fall In Love?
Is it companionship, procreation or something more? DR ANNA MACHIN reveals what makes us so willing to become targets for Cupid’s arrow
Detecting the dead
Following personal tragedy, the creator of that most rational of literary figures, Sherlock Holmes, developed an obsession with spiritualism. Fiona Snailham and Anna Maria Barry explore the supernatural interests of Sir Arthur Conan Doyle