New York City's major hotels are all out support to help cut greenhouse gas emissions. This action is said to be part of the Mayor de Blasio administration's "NYC Carbon Challenge Program." This environmental program aims to reduce greenhouse gas emissions in the city by 80 percent by 2050.

According to The Real Deal, around 16 top hotels in NYC which include the Waldorf Astoria New York, the Lotte New York Palace, the Pierre-A Taj Hotel, the Crowne Plaza Times Square and the Grand Hyatt New York, all agreed to lower down their greenhouse gases by 30 percent or more in the next decade.

Mayor Bill de Blasio's office just recently announced the participation of those big hotels. Yahoo! News reported that the Mayor released a statement which says, "If some of New York's most iconic hotels can significantly reduce their carbon footprint, anyone can."

It has been reported that New York is the top tourist attractions in the United States. In 2014, 56.5 million people visited the city. And the local officials strongly believed that with the support from those famous hotels, the Mayor's environmental advocacy is going to succeed.

Given their pledge of support, those hotels can already lessen emissions by 32,000 metric tons on carbon and an estimated $25 million in energy cost savings. 

Hervé Houdré, the general manager of the InterContinental New York Barclay, said that "As the nation's number one big city destination, the hotels are showing the rest of the world that our city is committed to reducing our carbon emissions and fighting climate change."

Meanwhile, it was back in September that Mayor de Blasio strongly pushed green building programs. The Mayor started the "retrofit accelerator," the city's new program as a way to push more support on environmental change.