Generate an explanation for the given claim using the provided supporting material from the paragraph. Please consider the following points while generating an output. 1) The claim will always have supporting proof in the paragraph, and the paragraph will have a clear point of view supporting the claim. 2) There can be instances where direct correlation to the claim is not available. Make use of the sentences in the paragraph to provide a corresponding output supporting the claim. 3) The explanation should be at least one and at most twelve sentences long.

Let me give you an example: Paragraph: "Although the story didn't cite the cost of appendectomy emergency or urgent surgery and we wish it had, we nonetheless will give it a satisfactory score because it at least cited what the editorial writer wrote, ""A secondary benefit is the savings to the hospital generated by minimizing staff and anesthesiologist presence late in the evening and during the wee hours of the morning."" As with our harms score above, although the story didn't give absolute numbers, in this case we think it was sufficient for it to report that ""The scientists found no significant difference among the groups in the patients' condition 30 days after surgery or in the length of their operation or hospital stay."" Although the story didn't give absolute numbers, in this case we think it was sufficient for it to report that ""The scientists found no significant difference among the groups in the patients' condition 30 days after surgery or in the length of their operation or hospital stay."" Despite running less than 300 words, this story did an adequate job in explaining the quality of the evidence, including pointing out limitations. No disease-mongering here. The story meets the bare minimum requirement for this criterion in that it at least cited what an editorial stated. The focus of the story was on a study comparing emergency appendectomy with surgery done up to 12 hours later or beyond. This is the whole focus of the story and one we applaud when it begins: ""Appendectomy is the most common emergency surgery in the world, but it doesn't have to be."" There were no claims made about the novelty of this research, and we may have wished for a bit more context on this. Nonetheless, the potential for guiding future care decisions was made clear. Not applicable. Given that the story only pulled excerpts from the journal article and the accompanying editorial, and didn't include any fresh quotes from interviews, we can't be sure of the extent to which it may have been influenced by a news release.". Claim: Some appendicitis cases may not require 'emergency' surgery
The answer to this example can be: We really don't understand why only a handful of mainstream news organizations reported this story. (At least in what we found.) The most common emergency surgery in the world. Rushing to emergency surgery may not carry any benefit. Waiting a few hours may be safer and less expensive. Why is that not a story? We applaud USA Today for finding time and space and clearly it didn't need to free up much space to do a good job telling the story. The story explains that as many as 300,0 appendectomies are done each year in the US. That figure alone explains why this is an important study to report.
Here is why: The output is an analysis of the claim while considering the paragraph as a reference. The output highlights the key features presented in the paragraph and explains the claim accordingly.

OK. solve this:
Paragraph: The United Nations calls climate change the "defining issue of our time" and is hosting a New York summit on it next week. But reformers within say in the letter addressed to Secretary-General Antonio Guterres that it needs more radical change to get its own house in order. "Our commitments need to be more ambitious and at least as concrete as those of the UN Member States and non-party stakeholders attending the UN Climate Action Summit," said the letter, signed by at least 1,950 employees. It was organized by a group called Young UN, an internal network committed to ensuring the organization embodies the principles it stands for. "As Greta Thunberg just sailed across the Atlantic Ocean and young people across the world continue to strike every Friday, let us look at our own impact and take bold steps to address the climate emergency," the letter said, referring to the Swedish teenager who has inspired global climate strikes. The United Nations emitted 2 million tonnes of carbon dioxide equivalent in 2018, according to its own data which includes both the 44,000 secretariat staff present in more than 60 countries as well as tens of thousands of interns, contractors and peacekeeping troops deployed worldwide. That equates to a carbon footprint larger than several of its member states, including Malta and Liberia, according to statistics from the Global Carbon Atlas for 2017. Among 10 issues identified by Young UN are travel allowances, which the letter said needed to be cut or scrapped "in order to disincentivize travel by UN employees and UN meeting participants motivated by financial gain". Allowances, or per diems as they are known internally, are intended to cover travel costs including food and accommodation, and can exceed $400 a day for some locations such as New York, according to the International Civil Service Commission website. The letter also suggested that staff should be rewarded for downgrading from business class, where a spacious seat generates several times the emissions of an economy class ticket. Travel accounts for nearly half the United Nations' emissions, its data show. Last year, under pressure from member states, the head of the U.N. Environment Programme, Erik Solheim, stepped down amid criticism of his travels. Other reforms recommended in the letter include a complete divestment of the more than $60 billion U.N. pension fund from fossil fuels and creating offices run entirely on renewable energy. Young UN did not respond to requests for comment. Guterres is seeking to combat climate change from within in order to boost sustainability. "The Secretary-General welcomes the initiative of Young UN on climate action in the UN system," Guterres' office said in a statement to Reuters on Friday. "The Secretary-General is committed to lead by example and calls for transformative action to address the climate crisis, including on the part of the UN system and Secretariat itself," it continued. The employees' letter welcomed Guterres' internal strategy but said it "misses the urgency of the crisis we are facing". The United Nations has also launched a "Greening the Blue" initiative which measures the U.N. system's greenhouse gas emissions, waste disposal, fresh-water use, and environmental management. According to its latest report issued on Friday, 55 of its entities, or 95 percent, including the Secretariat, were climate neutral in 2018, against just over a third the previous year. But the letter raises doubts about U.N. offset mechanisms, a method that works through purchases of U.N.-certified carbon credits from approved green projects and is widely used by organizations and businesses to tout their green credentials. This echoes criticism from NGOs about the contribution of offsets to sustainable development. Isabella Marras, Sustainable UN Coordinator, whose team produces the Greening the Blue report and was a signatory to the letter, said she saw scope for the United Nations to give even greater attention to environmental considerations. "What we are missing is the aggressive integration of environmental issues into our programs like the UN has done for women," she told Reuters. But she stressed some of the pragmatic challenges in regions where environmental standards are less strong than in Western countries. Marie-Claire Graf, a 23-year-old Swiss climate activist visiting the U.N. European headquarters in Geneva, said the number of U.N. vehicles in vast carparks overlooking the lake and mountains was surprising. "The UN is doing some amazing things on environment but I am shocked by so many SUVs and the amount of travel," said Graf, who was selected along with 100 young climate leaders to attend the U.N. Youth Climate Summit on 21 September. "The UN needs to lead on this transformation." Claim: U.N. urged by own staff to look at its climate footprint.
Answer:
Close to 2,000 United Nations employees have called for the global body to reduce its carbon footprint, including through curbs on their own diplomatic perks like business-class flights and travel handouts, a letter obtained by Reuters showed.