Jadav Payeng, fondly called as the 'Forest Man of India', single- handedly planted a forest which encompasses 1,360 acres. He started this in the year 1979 as a 16-year old Peyang and been planting trees for over 35 years. In my opinion it is the greatest achievement of a human.
Thanks to the current Indian government for conferring padma shri to Jadav Payeng on March 31st, 2015. I blogged about him and his achievements a couple of years back and really happy that he is honored and acknowledged.