World Leaders to Sign Climate Agreement on Earth Day
Leaders from 130 nations are gathering at the United Nations to sign the historic climate deal reached in Paris last December.
The signing happens on the 46th anniversary of Earth Day. Since 1970, every year people around the world observe the day by doing different activities to clean up the environment.
On April 22, 1970, U.S. Senator Gaylord Nelson organized the first Earth Day with a "national teach-in on the environment."
Earth Day Network says 20 million Americans gathered in the streets, parks and meeting halls "to demonstrate for a healthy, sustainable environment" in large rallies across the country.
This year, more than a billion people will celebrate the day by working for a clean environment.
U.N. Secretary-General Ban Ki-Moon has urged countries to take action to fix climate change.
"That is the only way which we can save this one, only, planet Earth."
Island nations are very vulnerable to the stronger storms and rising sea levels brought on by climate change. One example is the Pacific island of Fiji. Super Cyclone Winston crashed into the island nation last February, killing 44 people and causing $1 billion in damage.
Fiji's Prime Minister Josaia Bainimarama talked about their fear about the future:
"The frequency and intensity of extreme weather events such as Winston's is increasing. And we all have to be fearful about what this means — not only for ourselves, but for future generations."
It was last December, in Paris, France that world leaders worked out the details for the historic agreement. It limits the rise in global temperatures to well below two degrees Celsius.
It provides a way to reduce greenhouse gas emissions — those include pollution from factories and the burning of fossil fuels like coal. The agreement calls for a way to stop the effects of warming the planet. That includes moving towards using renewable energies, like wind and solar— or power from the sun.
Putting the plan into action will take several steps.
First, the 130 leaders gathering in New York Friday will sign the agreement. Then their governments must ratify — or formally approve it — to put it into action.
Selwin Hart is director of the U.N. Climate Change Support Team.
He says the Paris Agreement must cross two important lines to become enforceable.
First, at least 55 parties to the United Nations Framework Convention on Climate Change must ratify the agreement. And those 55 countries must represent 55 percent of global greenhouse gas emissions.
China and the U.S. are the biggest contributors to the world's global greenhouse gases. Together, the countries are responsible for about 40 percent of the world's emissions.
Both the U.S. and China support the agreement. They are pushing for its early adoption by all the nations.
The target date to start the agreement is 2020. That could change. If all the countries ratify it quickly, it could happen this year, or in early 2017.
I'm Anne Ball.
1. clean up 打扫；清扫；把…弄干净；清理；
You should always clean up the room.
2. sustainable （自然资源）可持续的，不破坏环境的；
Try to buy wood that you know has come from a sustainable source.
3. ratify 正式签署；批准；认可；
The parliaments of Australia and Indonesia have yet to ratify the treaty.
4. be responsible for 负有责任的；应承担责任的；
Ludlam was responsible for making Ridiculous Theatre something of a cult.
1. Island nations are very vulnerable to the stronger storms and rising sea levels brought on by climate change.
be vulnerable to 易受伤害的；易受影响的；
Young birds are very vulnerable to predators.
Tourists can be vulnerable to scams and con schemes of all kinds.
bring on 引起，导致（疾病、痛苦或某种感觉）；
Severe shock can bring on an attack of acne.
Bob died of a heart attack, brought on by his lifestyle.
2. It was last December, in Paris, France that world leaders worked out the details for the historic agreement.
work out 想出，得到（解决方法）；解（谜）；
Negotiators are due to meet later today to work out a compromise.
I think we should work out a strategy to deal with this situation.
3. Putting the plan into action will take several steps.
put sth. into action 把…付诸实践；
They have learned the lessons of business management theory, and put them into action.
They hoped to put the plan into action.
签署仪式在第46届世界地球日这天进行 。自1970年以来，世界各地的人们每年都会开展各种各样净化环境的活动来纪念世界地球日 。
岛国易遭到气候变化造成的强风暴和海平面上升的影响 。太平洋岛国斐济就是例证 。去年2月，超级气旋“温斯顿”侵袭斐济，造成44人死亡，损失达10亿美元 。
“像‘温斯顿’这样的极端天气事件发生的频率和强度日益增加 。我们对这种趋势感到担心，不仅仅是为我们自己感到担心，也为后代子孙感到担心 。”
去年12月，全球领导人聚集在法国巴黎，制定出这份历史性气候协议的具体内容 。这份协议将全球气温升高控制在2摄氏度之内 。
同时，这份协议还提出了减少温室气体排放的方法，温室气体包括工厂污染和煤炭等化石燃料燃烧造成的污染 。该协议呼吁采取方法阻止地球变暖带来的影响 。解决方法包括使用风能和太阳能等可再生能源 。
首先，聚集在纽约的130个国家的领导人将于周五签署气候协议 。之后这130个国家的政府必须正式批准协议的实施 。
其一，至少55个《联合国气候变化框架公约》缔约方核准该协议 。其二，这55个缔约方的温室气体排放量占全球总排放量至少约55% 。
中国和美国是全球两个最大的温室气体排放国 。两国的排放量占全球总排放量的约40% 。
中国和美国均表示支持该协议 。两国将分别在国内采取措施，以便尽早加入该协议，同时呼吁其他国家也签字加入 。
气候协议预计从2020年开始生效 。这一时间可能会改变 。如果所有国家尽快完成核准，协议可能从今年或2017年初开始生效 。