Hunting animals used to be central to the survival of most human communities over most of human history, whether it be for food or medicines or to use their fur and skin as clothes and rugs. Communities had developed ways to hunt animals without overexploiting them, such that the animals and humans could survive together. While we try to inculcate the values of sustainability in people today through classes and lectures, such values used to be a matter of common sense. If you kill all the animals this year, what are you going to hunt next year?...

Tribal people are often potrayed as underdeveloped. But history actually shows something else. For the past few months, an uneasy calm is prevailing over the lives of Huaoranis—an Ecuadorian tribe living in the deep and dark forests of Amazon. Recently, they spot some outsiders in the forest. Not only that, the other day they saw a big bird with a deafening sound hovering over their village. This big bird was in fact a helicopter, which for us is as familiar as birds flying in the vast, blue sky. But for the Huaoranis, it only meant one thing...

There could come a day when the world will not see rhinos or elephants in their natural habitat. 

It is said that when the British Governer General Warren Hastings brought the water hyacinth to India in the 18th century, thinking it was a flower, he couldn't have imagined that was actually a deadly weed. 

While in India it is unthinkable to see beloved elephants as a source of crop damage, their rising population in African countries is a huge problem. Elephant herds can cause substantial losses if they enter farms.

In fact, in 2008, the South African government lifted the moratorium on the culling of elephants. At the time, the environment minister, Martinus van Schalkwyk, said that culling would be considered only as a management option of the last resort...