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  2. Animal testing on rodents - Wikipedia

    en.wikipedia.org/wiki/Animal_testing_on_rodents

    In the UK in 2015, there were 3.33 million procedures on rodents (80% of total procedures that year). The most common species used were mice (3.03 million procedures, or 73% of total) and rats (268,522, or 6.5%).

  3. Space Environment Simulation Laboratory - Wikipedia

    en.wikipedia.org/wiki/Space_Environment...

    Space Environment Simulation Lab at NASA CRGIS Historic American Engineering Record (HAER) No. TX-109-B, " NASA Johnson Space Center, Building No. 32, Space Environment Simulation Laboratory, Chambers A & B, 2101 NASA Parkway, Houston, Harris County, TX ", 28 photos, 7 measured drawings, 46 data pages, 4 photo caption pages

  4. Timeline of historic inventions - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_historic...

    The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...