Title: Virgin Earth Challenge
Description: Sir Richard Branson's 25m prize for scalable and sustainable ways of removing greenhouse gases from the air.
Keywords:Carbon negative, Green technology, Climate change mitigation, Social Entrepreneurship, Negative emissions, Sky mining, Earth Challenge, Virgin Earth, Virgin Earth Challenge, VEC, 25 million, 25$ million, 25 million dollars, Climate change, Alan Knight, Richard Branson, Environment, Environmental, Virgin competition, Richard Branson competition, Al Gore, Al Gore competition, Environmental issues, Greenhouse gases, Greenhouse gas removal,
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