But environmentalists warn that some big firms are playing carbon rules to their own advantage.

BBC: Energy Bill and plans to pay firms to cut energy use due

Environmentalists warn that the proposed highway's traffic could turn some of the park's majestic wildlife into roadkill.

BBC: Eco-scorecard to the world��s great attractions

And some additional, much less happy news from Australia, as Unesco and environmentalists warn that climate change and large-scale coal mining may lead to the wholesale destruction of the Great Barrier Reef.

BBC: In brief: Unearthing Australia's secret history

While the increase in tiger numbers is good news, say environmentalists, they warn India cannot get complacent.

CNN: Managing India's tiger-human conflict

Critics, generally from business, warn that together these revisions threaten to release a torrent of litigation as suppliers, customers, environmentalists and others ask the courts to reverse company decisions.

ECONOMIST: A proposed new bill would invite judges into the boardroom