Washington Post: Sometimes, on environmental issues, we make things too complicated. Global warming is an example. We go on and on about emissions targets and thresholds and offsets -- when really, its all about something much simpler: heat.
We burn fossil fuels -- coal, oil, natural gas -- because doing so gives off heat. We then use that heat to create electricity (and for other purposes).
But burning fossil fuels also gives off carbon dioxide, which makes its way into the atmosphere and gives us heat in...