Your children or grandchildren may see tigers, penguins, sea turtles and polar bears only in books, if world leaders do not agree to cut carbon emissions soon. Experts say climate change will impact the world’s coldest regions and coasts the most and the hundreds of species inhabiting these will be hit hard. Some, such as the penguins of Antarctica which hunt over large areas for fish, may even become extinct by 2050.
With the polar ice caps melting, sea level is expected to rise, inundating areas and species along coasts.
What compounds the problem is that many species facing extinction due to the changing climate are already a threatened lot due to poaching or loss of habitat, usually due to increased human activity and the growth of farms and cities.
India may soon have to hunt for another national animal. The tiger is critically endangered, with some estimates saying less than 2,000 Royal Bengal tigers are alive in India and Bangladesh.
Environmentalists fear global warming could see the Bay of Bengal inundate large parts of the Sunderbans, one of the major habitats of the tiger, putting its chances of surviving this century at an even greater risk. India launched Project Tiger in 1973 when the cats began disappearing at an alarming rate, but the effort has not proved to be enough.
Global warming is also shrinking the habitat of polar bears, the largest land carnivores. The bears inhabit the Arctic, where the maximum temperature is 0°C (the minimum can be as low as -34°C), and eat seals in the winter. In the summer, they mostly survive on body fat since seals stay hidden in water. Global warming will mean less ice and more water and death by starvation for the bears.
Scientists fear the magnificent white-coat bear might be among the earliest victims of warming. They have already noticed the polar bear getting smaller in size due to insufficient diet caused by ice-melting. In 1973, five countries banned polar bear hunting, but environmentalists fear global warming could destroy its habitat – the Arctic Circle – before it adapts to new surroundings.
The Olive Ridley turtles, which lay eggs on the beaches of Orissa, face a unique threat. Soon, there might be no male turtles left to reproduce. The turtle’s sex is determined by the temperature in its nest – colder nests breed males. Fewer males are hatching due to rising seas and warmer beaches, threatening the turtle’s very existence.
To ensure that the hatchlings are safe, the government has banned fishing up to 20 km from the shore, has curbed human activity in nesting areas and groups have been formed to ensure the eggs hatch safely, but the ban is often flouted and nesting areas often encroached on. DNA India

