Save the Earth; welcome to enV

Trees are the main source that hold animal civilizations. So protect it and will live longer... Recent years as human population increases, consumption of fuel resources has been depleting. Need for alternative energy sources are high. Depleting energy (Fuel) makes fuel prices sky rocket over past 6 months period. Earth possesses limited amount of resources.. when run out human civilization will have difficulty running... Thus saving the earth and using energy efficiently is vital in today's world.