From the BBC World Service: Some European Union countries have backed plans for the new defense system to keep out unmanned aircraft from Russia. But how will it work, and what's the price tag? In France hundreds of thousands of workers have walked out over looming budget cuts and pension reforms. Today marks the 75th anniversary of The Turing Test, to tell the difference between a human and a machine. And we hear how Chilean businesses are adapting — or not — to an ageing workforce.