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The open source tool turns the vast history of the universe -- 13.8 billion years of information -- into an interactive, visual timeline. Features enable users to zoom in and out as they explore curated content about, for example, the history of life on Earth, extinction of the dinosaurs, or causes of World War I. Users also can author and share their own timelines about specific events or eras.

"Learn the history of the Hittites. Read about them in their own words. Reference a powerful map to reveal the Hittite world. Uncover the most recent discoveries. Discuss with others. You can do all of this at Hittites.info, in a single, powerful, integrated environment. Learn history in a way never before possible - at Hittites.info."

"The purpose of this page is to provide a source of information on all aspects of Mesopotamian mathematics. We explain the origins of mathematics in Mesopotamia from the earliest tokens, through the development of Sumerian mathematics to the grand flowering in the Old Babylonian period, and on into the later periods of Mesopotamian history. We include some general surveys to get you oriented in each period, and some more detailed resources for those interested in specific aspects of this fascinating episode in history. Like most other Web pages it is under slow construction as time permits. Some of these resources are of general interest, others are intended mainly for use by students in my History of Mathematics class. "

A ThinkQuest page with information, interactive ativities, galleries, links and vocabulary lists about Ancient Mesopotmia