Rearing livestock such as cows, sheep and chickens is no longer sustainable in the face of climate change.Animal agriculture emits large amounts of greenhouse gases. If the earth heats up by 2 deg C, 13 per cent of the ecosystem hosting plants and animals will be lost.Meanwhile, Singapore’s population is increasing and its nutritional needs comprise 25 per cent protein. High-tech and high-intensity farming will produce the food of the future.To guard against food supply vulnerabilities and ensure that the country meets its meat needs, researchers are starting to grow them – from cells in the lab.