Ecosia is not only the biggest European search engine but also one of the biggest tree planting organizations on the planet. Ecosia's founder Christian tells us more about his unusual company and explains why he believes technology won't solve climate change.

VP of Engineering is a complex role, which combines technical, human and strategic skills. If you're interested in this position, it is important you understand the steps involved in reaching this level of responsibility.

As programmers, we tend to brush away usability as something that designers should worry about. In this talk you will learn how to make your APIs easy to learn and fast to use. Lea Verou is a W3C TAG member who’ve created dozens of successful open source projects for over a decade.