Where will the next great ideas in engineering come from? What will they be? These are but a few of the excellent and thoughtful questions being asked as part of the Grand Challenges For Engineering initiative. Sponsored by the National Academy of Engineering (NAE), this website is part of their effort to solicit opinions on this material from engineering experts and members of the scientific community. Visitors to the site can learn about members of the initiative's committee and also learn about some of the innovations that the panel is already thinking about, such as the challenges of landing on Mars. In the "Hopes" section, visitors can read several essays, including one from President Jimmy Carter on his own thoughts on future challenges in this area of human endeavor. It is also worth noting that visitors can offer their own opinions on all of the material here, and that comments are moderated along the way.