Per wikipedia, EROEI for tar sands is 3:1, and they're profitable. :( EROEI for biodiesel is 1.3:1 - and substantially replacing petroleum would take a lot of f

Per wikipedia, EROEI for tar sands is 3:1, and they're profitable. :( EROEI for biodiesel is 1.3:1 - and substantially replacing petroleum would take a lot of farmland. So until there's a biodiesel process that ups the EROEI (this algae process might be it), we're stuck. By contrast, global oil production is around 20:1. It used to be 100:1, back in the 1950s.