"The green bench of the Supreme Court has been passing orders and huge amounts of money running into thousands of crores of rupees have been collected by the government. Where has that money gone? Certainly it has not gone for the improvement of the environment, because over the last few years, we have seen degradation of the environment and defoliation of forests," Justice Lokur said.
Union minister Prakash Javadekar rebutted the assertion and said, "The government has a good account of how we have collected the money and it is using it on renewable (energy) and climate change. It is not diverted anywhere."
Justice Lokur said there was a dearth of environmental laws in the country and added that Parliament needed to frame laws on a variety of issues confronting the mankind.
"We need to frame laws, so that there is a clear understanding of the problems," he added.
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Responding to the allegations of judicial activism, he said it had to "come about" as there was no option but to be active, due to the absence of laws or their shoddy implementation.
Justice Lokur pointed out that the Supreme Court had been involved in environmental jurisprudence since long and said the courts alone could not bear the burden, the government must also bear it.
Javadekar said India was the only country which taxed coal production at the rate of six US dollars per tonne, which no other country in the world had done so far, and added that the government was committed to using cleaner methods for generating power.
"But, you need time and it cannot happen overnight. You cannot stop the vehicles from plying. There has to be a concrete and feasible plan," the minister added.
Stressing on the need for sustainable development, Javadekar said, development and environment were not rivals. He gave the example of the Delhi Metro and said when it was launched, some NGOs had created a controversy over felling of trees.
The human resource development (HRD) minister said there was a huge challenge before the country as it accounted for 2.5 per cent of the world's land, but had to cater to 17 per cent of the world's population, which was a massive burden on its resources.
Railway Minister Piyush Goyal laid emphasis on ways to combat climate change and said he was looking at 100 per cent electrification of the entire fleet of the railways as even after seven decades since Independence, 50 per cent of the trains entering Delhi had diesel engines.
He said it was the sensitivity of the NDA government and "the commitment of all of us collectively to work towards achieving sustainable lifestyles", which would make it possible.
Goyal, who also holds the coal portfolio, said his ministry used the ISRO's satellite technology to map areas, which had been converted into forests, and put them in the public domain.
Stating that protecting the environment was one of the fundamental principles of all the religions, he quoted from the Granth Sahib: "The purpose of human beings is to achieve a blissful state and to be in harmony with earth and all of god's creations."