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Gates calls world to prepare for next Ebola

Visiting Berlin on Tuesday, billionaire philanthropist Bill Gates said the world must use the lessons from battling Ebola to prepare for any future "war" against a global killer disease with the help of new technology.

Bill Gates backs Berlin science start-up

Bill Gates backs Berlin science start-up

SAP billionaire defies Bill Gates over donation

SAP billionaire defies Bill Gates over donation

SAP founder Plattner joins billionaire giveaway

SAP founder Plattner joins billionaire giveaway

Bill Gates: Finance tax should aid world’s poor

Bill Gates: Finance tax should aid world’s poor