''Our communist ally, China, plans to build 2 million hectares (20 billion square meters) of controlled environment greenhouse, producing half of all vegetables and crop needs. Temperature, humidity, lighting will be under controlled conditions. Plants grow best at CO2 at 1500 ppm or 4 times today’s CO2 levels, boosting plant yield by 25% to 65%..We know where Australia will be buying vegetables from shortly.''
