| Taxidermists are at pains to point out that they merely preserve to ensure that humans' understanding of nature continues to grow. |
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| Certain species of hookworms can affect humans when the larvae burrow under humans' skin and cause an itchy rash. |
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| State and government agencies are also investigating whether wild pigs might play a role in spreading disease to crops that reach humans' plates. |
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| Birds are beautiful creatures that have captured humans' fancy at least since the Etruscans studied their flight patterns for clues to the future nearly 3000 years ago. |
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| Theories have ranged from interspecies genocide to interbreeding to humans' superior communication skills, hunting technology, and social organization. |
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| Chimps and their sister species, bonobos, are humans' closest living relatives. |
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| Although about 80 percent of humans' food supply comes from just 20 kinds of plants, humans use at least 40,000 species. |
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| As well, a reliance on social learning may be responsible in part for humans' rapid adaptation to many environments outside of Africa. |
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| In the early 1900s, Jung proposed that these archetypes were ancient images stemming from humans' collective unconscious. |
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| Similarly, humans' ability to catabolize ethanoll via alcohol dehydrogenase and acetaldehyde dehydrogenase lends support to an evolutionary history with alcohol. |
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| Clockmakers of the Middle Ages and renaissance men such as Leonardo da Vinci helped expand humans' technological milieu toward the preconditions for industrial machine tools. |
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| Humans' thinner body hair and more productive sweat glands help avoid heat exhaustion while running for long distances. |
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| Humans' brains are about three times bigger than in chimpanzees. |
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