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.
The highest peak in the contiguous U.S. is Mount Whitney at 14,505 feet, located within the Sierra Nevada in California. California mountain regions were formed millions of years ago during major geologic movements, though the earth continues to move even inches per day in some parts of California as new mountains slowly form.