text: Lab-grown meat, also known as clean meat, works by taking stem cells from an animal and placing them in a nutrient-rich environment to encourage them to grow. Dutch researcher Mark Post ate the first “clean” burger in 2013, but its $330,000 price placed it far outside the realm of the everyday McDonald’s menu. Research suggests the meat could hit shelves by 2021 with a price tag of $10 per patty — but the nutrients used to feed the cells are expected to be a major factor in the final price.
  The winner of the competition will be announced on October 23. Other entrants include GutFeeling, which looks at the link between gut microbes and Parkinson’s disease, and Re-CoLi, which is looking at how to better recycle lithium-ion batteries.