Reminding the aftermath of natural disasters and the role of scientists to fight that, President Iajuddin Ahmed yesterday called upon the world community to work unitedly to face the challenges of climate change and make the planet a better place to live in.

He described scientists as the most important representatives of humankind and asked them to give suggestions to the world community to protect the planet.

The president was addressing at the inaugural session of the six-day International symposium on "Climate Change and Food Security in South Asia" at a city hotel.