A few weeks ago, Stanford held their Global Climate and Energy Project workshop – three days of presentations on how we can innovate on global energy technologies to significantly reduce greenhouse gas emissions. The talks ranged from solar energy technologies to bioenergy storage to carbon mitigation / capture / separation / storage, plus a plethera of poster presentations. The key issue is a simple one – we’ve got to replace our energy needs – particularly coal – with carbon-free technologies to keep atmospheric CO2 under 550ppm. And that means changing our way of doing business and our way of selling lifestyles.