I'm fascinated that the solutions to climate change appear to line up neatly with the things that hippies have been saying for years (capitalism needs to be replaced with a state-managed global economy, nuclear power is bad, vegetarianism is good, bicycling is good, plant more trees).

Particularly the nuclear power option. That one makes no sense.

Concrete is a major source of CO2 emissions. In some places, it contributes more than agriculture. Why isn't that being targeted for scientific studies on its impact, and recommendations from the UN on practices? Or has it, and those are just not newsworthy enough to make the BBC take notice?

I'm probably being cynical, but it all smells of hidden agendas.