Is Al Gore the future of e-books? You might think so if you look at Al Gore: Our Choice, an interactive book from PushPopPress that surveys the causes of global warming and presents insights and solutions. Gore's narrative is mixed with photography, interactive graphics, animations, and more than an hour of documentary footage.

Five years on from Gore's film An Inconvenient Truth, this e-book brings together research in to renewable energy, conservation, business, and governance from experts who attended the more than 30 Solutions Summits that Gore has convened since the film came out.

You can download the 'book' on to an iPad, iPhone, and iPod Touch. No sign yet of an Android or Windows version.