<p>Apple's Chief Executive Tim Cook faces a major challenge at the company's product launch later this Tuesday. Investors have been buying Apple shares in anticipation of a major new product line. Also today: how much sleep do you need to make you a reliable worker?</p><br /><br />Visit our website:<br />http://www.france24.com<br /><br />Like us on Facebook:<br />https://www.facebook.com/FRANCE24.English<br /><br />Follow us on Twitter:<br />https://twitter.com/France24_en
