Scientists discover near-Earth asteroid hours before it exploded over Berlin
For only the eighth time in history, scientists detected an asteroid before it made its fiery appearance over Earth
Berlin lifts headscarf ban for Muslim teachers
Under Berlin's neutrality act, which prevents civil servants from wearing religious clothing and symbols, teachers in the city were banned from wearing headscarves since 2005
Obama had dinner with Merkel in Berlin
Obama actually knows the city pretty well: this is his fifth visit to Berlin
