Compared to traditional agriculture, aeroponics does both. (1^st paragraph) 

Any water not used can be collected and reused. (12^th paragraph) 

The report showed that basic vegetables including lettuce, broccoli, peas or cauliflowers all traveled over 2000 miles (over 3000 km) before reaching the market and before being shipped on to supermarkets across the region. (8^th paragraph)

In an ideal world, and as in the past, much of the food consumed in cities would be produced locally, not shipped thousands of miles as happens today. (7^th paragraph)