President obama hailing the efforts of secretary of state john kerry. Our Juli Mcdonald is live in boston our top story. Juli . Juli this agreement is being called a turning point. To keep temperatures from rising over the next 85 years, it is around here wearing shorts and tshirts. People in nearly every country on the planet tonight or celebrating a historic milestone, a global pact to reduce the devastating effects of Climate Change. In the works for 20 years, but after two weeks of intense talks, World Leaders came to a consensus. We came to an agreement here that is the strongest and most ambitious Climate Change agreement ever created. Juli the agreement goes into effect on 20 to effect in 2020. Each country has to come up with their own plan to reduce Greenhouse Gas emissions and president obama we may not live to see our full achievements, but that is ok. What matters is that we can be more confident that this planet is going to be in better shape for the next generation. Juli