Yes. . . India should definitely take serious care about global warming. India has been a responsible nation always. In any terms we think, let it be War on Terror, War with Pakistan or other International Diplomacies. And Global Warming is something which will affect whole Earth, Whole Living...
No, It is definitely not a good idea to start business just after graduation.
Real business is way beyond what we read in books. To have a real experience, to see how things work out in reality, one has to go to the field work and have the first hand experience. Directly venturing wont b a good idea