lexmark phones and tablets. as a reporter found out, even refrigerator technology is not standing still. >> an estimated 1.3 billion tons of food land in the trash worldwide each year. one company has turned that statistic into a marketing strategy. their new refrigerators are designed with a vacuum pump, designed to keep food longer. >> the owner presses a button to start the vacuum, and the oxygen is sucked out of the fridge. we estimate that the less oxygen keeps food fresh or five times longer. you can hear it, too. and nutrients are kept. that is an advantage. >> it is also incredibly energy efficient. eu agencies have given it a top score, and saving electricity is one of the hottest trends at this year's ifa. small startups are also trying to ride the wave. one is looking to save costs by cooking heaters to smartphones. >> it lowers the temperature automatically when you go out and raises it again when you are on your way home. that can save you money, but you still come home to a warm house. >> manufactu