Deforestation Forests cover 31%  of the land area on our planet.We're losing 18.7 milion acres of forests annually,  equivalent to 27 soccer fields every minute Deforestation is a particular concern in tropical rainforests because these forests are home to much of the world's biodiversityDeforestation comes in many forms,  including fires,  clear-cutting for agriculture,  ranching and development,  unsustainable logging for timber,  and degradation due to climate change.