Source: New Scientist 

Researchers have engineered cows’ muscle cells that can multiply without the assistance of an expensive and energy-intensive growth-boosting substance. If scaled up, they are optimistic this could slash the production costs of lab-grown meat, but they stress that it is still early days. Lab-grown, or cultivated, meat can be produced from animal cells. Approved for sale in countries such as the US and the Netherlands, it has been touted as a more ethical and sustainable substitute to conventional meat, by avoiding the slaughter of animals and using fewer resources, such as water. But the current, small-scale methods of producing lab-grown meat have still proven to be extremely energy intensive and expensive.