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.
In fact, if one wanted to consider greater volcanic systems, one might well consider the whole island of Hawaii, with over 4000 square miles and five volcanoes, the largest volcanic system...but then, Hawaii is not in North America. The world's largest volcano is Mauna Loa on the island of Hawaii.