History. 1  A soldier carries an early example (1945) of mobile synchronous radio communication. 2  A basic chat box allows quick communication, but with too many people can be frustrating. 3  All those red flags are messages I've ignored, a pitfall of asynchronous communication.
Earth's Largest Volcano-Mauna Loa,Hawaii. The largest volcano in the world is Mauna Loa on the island of Hawaii. There have been references to Yellowstone as the largest volcanic system in North America, but most, if not all, scientific organizations recognize Mauna Loa as the largest single volcano.
Mount Usu (L R, Usuzan) is a volcano which has erupted four times in the past 100 years. Its most recent eruption occurred in the year 2000. The Usuzan Ropeway brings you close to the volcano's summit. The upper station's observation deck offers panoramic views of Lake Toya and neighboring Showa Shinzan. From a second observation deck a short walk away, there are views of the ocean and Mount Usu's largest crater, which was formed in an eruption in 1977.