US cities, states, businesses and non-profits have pledged to conserve and grow 855 million trees

Every year, trees capture 15% of America's carbon emissions. Reforestation could see this figure leap to 21%. Trees absorb 17.4 million tons of air pollutants annually, preventing 670,000 cases of asthma and other respiratory ailments. The US chapter of 1t.org - the trillion trees platform - is committed to tree equity. Led by American Forests and the World Economic Forum, it brings together a community from across politics, business, and grassroots organizations.