In the last 23 years, carbondioxide (CO2) level has crossed 418 ppm (parts per million) and is increasing at the rate of 3 ppm annually, said R. Velraj, vice-chancellor of Anna University.
At the grand finale of the three-day Carbon Zero Challenge 3.0 organised by the Indian Institute of Technology Madras here on Friday, Mr. Velraj said, if CO2 emission crossed 600 ppm, humans would cease to exist.
“Sustainability is important for fast-developing countries like India. We can show the way to the entire world,” he said, adding: “It is the duty of academic institutions and innovations to make every innovation associated with the concept of sustainability.”
