Mark Fellenzer spoke today about energy.  What is it?  What forms does it take?  How is it measured?  What is the cost per unit?  How can we save on our energy costs? How do engineers and architects plan for the impacts of energy on a building and on our day-to-day lives?

Excellent presentation on a very complex, but presented in a way that everyone not only understood it, but participated in the discussion.  Great job, Mark.