Submarine defense: Russian subs posing Pacific threat to US Navy. Military & Defense. March 18, 2016, 13:28 UTC+3. Ahead of Submariner Day marked on March 19 in Russia, TASS reviews Russian submarines that cause the US Navyâs greatest concern in the Pacific region.
What iceberg lettuce lacks in flavor it makes up for in crispness, versatility and storage length -- washed and stored correctly, a head of iceberg lettuce can last up to seven days in the refrigerator.
Almost any kind of leaf lettuce will grow quickly in a hydroponic system. Some of the types to try include Romaine, bibb and butter crunch, all of which are ready in three to four weeks. Head lettuce, such as iceberg, will grow well, but the heads take about twice as long to be ready as the leafy types. When growing leaf lettuce, harvest just the outer leaves of the plants and leave the inner leaves to grow, to give you a crop you can harvest almost every day.