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How far are we from the deep ocean?

Human beings have held two dreams for long: to jump out of the world and to dive into the deep. Decades of exploration has gradually turned the brilliant dreams into reality. In the year 1960, the deepest part of the ocean - Mariana Trench (deeper than 10000 meters), was visited by two oceanographers. This marked the milestone demonstrating our capability to reach wherever we would like to reach in the ocean. Continue reading →

Adventures of Clair Patterson

You may have been aware that our Earth is as old as 4.5 billion years. But do you know who found out this fantastic figure first? The destiny rests on shoulders on a young man, Clair Patterson, who was a PhD student at the University of Chicago in the 1940s. I'd like to share his story with you! The first task for Patterson was to measure the concentration and isotope composition of lead inside the zircon, which is extremely useful for geological dating. Continue reading →