The world's first "test tube" hamburger was served today in London by Maastricht University professor Mark Post, part of a project aimed at demonstrating that growing meat in laboratories is a potential means of reducing the environmental impact of mankind's increasing consumption of meat.<br /><br />Post, head of physiology at the university, has spent the past six years working on turning stem cells into meat. His first lab-grown hamburger patty weights 142 grams is part of a project that cost €250,000. <br /><br />To make the burger, Post's team took stem cells from a cow biopsy and incubated them in a nutrient-rich broth, where they multiplied. Then the cells were attached to "anchor points" in a petri dish, where they self-organised into pieces of muscle. Cell growth was stimulated by means of electric shocks. The resulting muscle was then minced and combined with lab-grown animal fat. Salt, egg powder, and bread crumbs were added to turn the meat into a burger. Beetroot juice and saffron were used to make it the color of beef.<br /><br />--------------------------------------------------------<br /><br />TomoNews is your daily source for top animated news. We've combined animation and video footage with a snarky personality to bring you the biggest and best stories from around the world.<br /><br />For news that's fun and never boring, visit our channel:<br />https://www.youtube.com/user/TomoNewsUS<br /><br />Subscribe to stay updated on all the top stories:<br />http://www.youtube.com/subscription_center?add_user=TomoNewsUS<br /><br />Stay connected with us here:<br />Facebook http://www.facebook.com/TomoNewsUS<br />Twitter @tomonewsus http://www.twitter.com/TomoNewsUS<br />Google+ http://gplus.to/TomoNewsUS