There's nothing more annoying than having to saw your way through a tomato because your knife has gone blunt.
But the days of having to sharpen your knives could soon be a thing of the past.
Nasa engineers have helped to create a knife that will almost never have to sharpened.
The cutting-edge 'KNasa Chef Knife' is twice as sharp as other blades and stays sharp for five times longer.
The brains behind it claim it is the first true innovation in knife making in over 200 years.
The knife is made from an ultra-hard alloy developed by scientists at the California Institute of Technology (Caltech) and has been tested by engineers at Nasa.
Read more: http://www.dailymail.co.uk/sciencetech/article-4136080/Nasa-creates-KNIFE-never-need-sharpened.html#ixzz4WDTnJ5Rk
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