clipped from: www.ted.com 
The TEDGlobal program is designed to explore and make visible the substance of things not seen. Some of the questions we'll address:
What makes big cities function?
What is an accomplished life?
Which universe do we live in?
Is life a mathematical equation?
Where does motivation come from?
Who's defining the new geopolitical map?
Can robots think?
Can we design the air we breathe?
What's the economic impact of terrorism?
Is modern art relevant?
Should we fear faith?
What do top-secret places look like?
What's the true nature of modern crime?
Can a solar-powered plane fly?