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ring specias
Ring species provide unusual and valuable situations in which we can observe two species and the intermediate forms connecting them. ring species, therefore, is a ring of populations in which there is only one place where two distinct species meet. In 1949, Robert Stebbins5 described a fascinating pattern of geographical variation in these salamanders. -
apollo 11 lands on moon
Armstrong and Aldrin were the first 2 men to land on the moon. the astronauts collected more than 50 pounds of rocks to bring and study them. -
human genome sequence
On June 26, 2000, the International Human Genome Sequencing Consortium announced the production of a rough draft of the human genome sequence. it cost a roughly total of $3 billion dollars. -
Sahelanthropus tchadensis fossil discovered
Sahelanthropus tchadensis is one of the oldest known species in the human family tree. This species lived sometime between 7 and 6 million years ago in Africa.