Mumbai, July 16 (IANS) Bollywood actress Katrina Kaif, who is riding high on the success of her recent hit "New York", may not be worried about her career graph, but is sure concerned about global warming.

"Global warming is becoming a very serious issue. It is crippling the world and as individuals it is our responsibility that we make a conscious effort to deal with it in our own little way and make the world a better place to live," Katrina said in a statement.

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