Definitely flavour of the month at the moment is introducing environmental responsibility to the mobile industry.
Ericsson has been loudly telling me about their base stations' lower power requirements over the last couple of days - more efficient electronics, heat-resistant kit that doesn't need air-conditioning, better network planning so operators need fewer sites.
Now I see that Nokia is providing alerts to tell people to switch off their phones' power supplies - most people just leave them plugged into the wall & switched on, wasting huge amounts of electricity. Highly laudable, this - I only started thinking about this a few months' back, and realised that I had a whole bunch of transformers constantly warming my house. Can't see why they can't just switch off automatically, though.....
Both of these actions fit into my preferred way of combating global warming - don't try & make people feel guilty about their lifestyles. Use technology to fix the problem and let consumers and businesses get on with normal existence without trying to foist misanthropic principles of "sustainability" upon them. Congrats to the IPCC for backing nuclear energy & carbon sequestration last week too.