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John Phillips divided life into Paleozoic. Mesazoic and Cenozoic.
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Lancelot Hogben. Frogs lay eggs. African clawed frogs where ecported out of the Cape Town.
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Obstetricians keep tanks of frogs
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Francis Crick and James Watson discover "Every organism carries a chemical code for its own creation inside its cells, a text written in a language common to all life: The simple four-letter code of DNA
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Walter Alvarez. Earths polarity. Magnetic field. pinkish limestone in italy. Clay in limestone below the layer species of formainifera.
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Peter and Rosemary Grant, observations fo finchs in Galapagos. Evolve year to year.
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Drought, causes finchs beaks to become bigger, by passing down trait to offspring.
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Frog collecting trips to sierra navada. Berkeley.
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Narty Crump. Costa Rica. golden toads vanished. Forced to change projects
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Alvarezes said asteroid slammed into earth killing everything
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Karen Lips, established research site in El Valle. Study unclassified frogs. Only found dead frogs. Changed locations. Went to western Panama. Frogs healthy.
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Alvarezes crater astroid theory proved. killed dinosaurs
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Lips. Santa Fe. Western Panama. More dead frogs. Something was wipping them out.
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Frogs in El Cope disappeared.
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White snydrom in bats first photographed.
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Hicks. Bats start dieing .
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Hans Eiberg. said found genetic nutation for blue eyes. A to G on chromosome 15
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97% of bats are dead in middle of winter. Albany