Well, yes, certainly sustainability isnâ€™t the point of a lot of them. But even those tend to have sustainable elementsâ€”a technology or an efficiency that we try to highlight. I think youâ€™ll see that in almost every episode, we try to fold sustainability into the show somehow. (We tried, by the way to do a whole series on sustainable design. Did you see Build It Bigger: Rebuilding Greensberg? No? Thatâ€™s why it isnâ€™t on anymore.) And we donâ€™t cover projects that are really obviously bad for the Earthâ€”like the Three Gorges Dam in China. Amazing, unprecedented scale (just the way we like it!) but an ecological and human disaster, so in that case Build It Bigger passed. So even in the shows we donâ€™t end up doing, there is an awareness of sustainability and the overall impact of these megaprojects. On the other hand, we did visit the Deriner Dam in Turkey for this upcoming season. There are environmental unequivocal impacts that come with the construction a reservoir and dam, but to us they appeared to be balanced by Turkeyâ€™s attempts to shift away from fossil fuels by using more hydroelectric power. These are complicated issues (and sometimes contradictory), and we donâ€™t shy away from them. Do I wish all giant projects were 100% sustainable? Yes, but thatâ€™s just not how things work. Yet.