Responding To Climate Change

     At a time when responding to our changing climate is one of the nation's most complex endeavors, reports from the National Academies provide thoughtful analysis and helpful direction to policymakers and stakeholders. 
     Nowadays, we are suffering a very hot world. The ozone layer is getting  thinner and thinner. The world  is becoming worst and will end if we cannot do a solution. 
     We need to act quickly and take advantage of existing solutions to prevent irreversible damage to our planet. Natural ecosystems provide significant opportunities to cut emissions dramatically and to preserve the adaptive potential of our biosphere.
       Scientists have estimated that lowering concentrations to 350 ppm may enable us to avert tipping points of ocean acidification and the melting of permafrost and arctic ice. Stabilization at 450 ppm is thought to be the threshold to avoid dangerous warming of more than 2 degrees Celsius, which would bring potentially catastrophic impacts for natural and human communities alike.
       For example, the burning and clearing of tropical forests is a major – though often unrecognized – source of greenhouse gas emissions. It accounts for roughly 16 percent of total global emissions, more than all of the world's cars, trucks, ships, trains and planes combined. It is now generally recognized that it will be impossible to achieve any of the needed targets for mitigating climate change without significantly curbing the clearing and burning of tropical forests. In fact, reducing global deforestation by 50 percent by 2020 offers nearly one-third of the cost-effective, technologically available options to meet 450 ppm stabilization targets.