Last June, HSBC announced a five-year, $100 million partnership to address global climate change, agreeing to work with The Climate Group, Earthwatch Institute, Smithsonian Tropical Research Institute, and the World Wildlife Fund in order to quantify the impact of climate change on the world’s cities, forests, and rivers through extensive field research. Yesterday, sources told GlobeSt.com that the bank is close to continuing its sustainable efforts by leasing 300,000 square feet across seven of the final ten floors available at Larry Silverstein's LEED Gold 7 World Trade Center. Should the deal close, HSBC would likely sell its 500,000-square-foot headquarters tower at 452 Fifth Avenue in Midtown. Asking rents for the final ten floors at 7 WTC are hovering between $75 and $85 per square foot, and HSBC's deal is rumored to be "at term sheet at the moment."