If one goes by the traditional definition of biodiversity hotspots, as was proposed by British biologist Norman Myers, and later added to by the global body Conservation International, India is home to four out of the world's 35. However, we are one of the most megadiverse lands on Earth, and have a lot that is still undocumented and underexplored in terms of biodiversity. This Earth Day, here's a look at 8 such spots that you can visit to understand and marvel at the the natural bounty India is blessed with, and which needs to be protected.