The UK government appears to have cooperated with Rio Tinto mining to block a visit by a victim from Madagascar to the company's annual meeting in London.

I distrust on principle all "offsetting" schemes and all claims by companies that they protect the environment in some subtle way. Big companies have so much temptation to falsify these things, and so little scruple about doing so.

Scientists have figured out why global heating causes extreme weather in temperate zones.

California's long drought is over, but global heating will bring further droughts, even longer and worse than this one.

Bernie Sanders: Although Assad as a war criminal is not entitled to complain, bombing Syria can put others in danger.

The US has backed off from demanding Twitter identify anonymous dissidents that work in US immigration.