Original sentence: However, present realities of food production do not support such optimism;  The United Nations has reported that world malnutrition trends of the 1990s have reversed in the early 2000s, and the malnutrition goals of year 2015 will likely not be met.Many countries have managed to increase their carrying capacity by using technologies such as agriculture, desalination, and nuclear power
Edited sentence: Many countries have managed to substantially increase their carrying capacity by using technologies such as agriculture, desalination, and nuclear power