The world oil supply graph is a problem, because the blue-green colors look so similar, you can't really tell which bar is 2007, 2008, 2009 & 2010. Can you adjust this at all?

It is a problem. A couple of pointers. If you work back from the clear yellow, it's easier; and the 2010 green ends (left-to-right) on the 2010 line,

Peter.

What texts are you using? I've been toying with trying to teach a course on energy if I end up permanently in a geography department. It's such a basic subject and so overlooked. Thanks.

The class actually deals more with how power is used and lost, and how this can be improved, but from the point of a mining operation, so it tends to be somewhat specific, and thus I rely more on papers and my own notes, than a single text.

my mistake double post