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.
Most Active Volcanos in the USA. Augustine volcano is one of the most active volcanoes in Cook Inlet, having a symmetrical cone rising 1,254 meters above the sea level. This volcano has erupted in 1812, 1883, 1935, 1963-64, 1976 and 1986, and surprisingly, the intervals between these eruptions have reduced from 70 to 10 years.