Hm... I agree about the environmental challenge, but see the problem not in the demographic but the job market development, and would prefer quality over quantity in education. Further challenges I'd see would be further EU democratisation, a US-independent and coherent (and non-imperial) joint foreign policy, reducing greatly the ethnic hatreds (especially that of Romas), and to permanently separate the EU project from neoliberalism.

_{*Lunatic*, n.
One whose delusions are out of fashion.}