India, May 23 -- Every species is a part of Nature's chain; If one goes, the entire chain will collapse or at least be disturbed

You all must have seen the Grand Canyon in the United States on the internet, television or in print. That famous shot of the Colorado windings through red rocky outcrops. If you follow the dying river a few thousand miles further, it reaches the Sea of Cortez, also called the Gulf of California. That is where you should have come across a little porpoise called the vaquita. But you won't because there are only 10 vaquitas left in the world.

Let me tell you about how we humans are emptying our planet of non-humans. Scientists have a name for this phenomenon: The Sixth Mass Extinction.

Our planet is 4.5 billio...