21st Century Skills?

What are they?
What do they mean for today's Teachers?
The 21st Century Skills website titled "Route 21"offers an interactive site for seeing how well you understand our 21st century students.
It's also a neat site for refining/developing your idea of the skills required to teach those students.
The site defines 21st century skills as: "the full integration of core subjects with learning skills, learning tools and 21st century content as taught in 21st century contexts".
Check it out as it's worth a good look. "21st Century Skills"