In the beginning, all it took was one scientist named, Walter Alvarez, to spur a whole scientific community into looking for more and more evidence regarding the mass extinction including the dinosaurs between the Cretaceous and Tertiary periods. The pathway all started with a surprising observation, Walter had unearthed a thick claystone layer that was devoid of all fossils which the level only containing a much smaller number of fossils.
Armed with this evidence, Walter started asking around, first with his own father Luis Alvarez. From there they came up with a hypothesis and brought in Richard Muller. With each new discovery, Walter’s team grow to include physicist and chemists. Once their finds were published in the journal Science, there
Armed with this evidence, Walter started asking around, first with his own father Luis Alvarez. From there they came up with a hypothesis and brought in Richard Muller. With each new discovery, Walter’s team grow to include physicist and chemists. Once their finds were published in the journal Science, there