What is fire?
How far can you go with satire? After the Paris attacks, organizers of Germany's Rose Monday parades have been asking themselves this very question. In Cologne, they've chosen their theme for 2015: "Je suis Charlie."
He's one of a handful of men to have orbited the moon. Today, Alfred M. Worden says NASA's on the wrong track. He also tells DW why he likes the moon's dark side and what he wanted most - but didn't get - upon returning.
Olivia Fernandes from Auckland in New Zealand
Alfred Wong from San Francisco, USA
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