A group of scientists from the Netherlands will introduce the world's first in-vitro burger made in a laboratory.<br /><br />The process involves taking the stem cells from cows and growing them in petri dishes until they have formed thousands of muscle fibres.<br /><br />Supporters of the laboratory burgers and animal activists say that it will reduce the need for factory farming.<br /><br />Al Jazeera's Nadim Baba reports from London.
