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  1. 2 days ago · The Descent of Man, and Selection in Relation to Sex” “The Different Forms of Flowers on Plants of the Same Species” “The Effects of Cross and Self Fertilization in the Vegetable Kingdom” “The Expression of the Emotions in Man and Animals” “The Formation of Vegetable Mould, Through the Action of Worms”

    • Adrian J. Desmond
  2. 2 days ago · In the 19th century, new studies pushed Man closer to the rest of the natural world, provoking a readjustment in definitions of Man and understandings of the human embryo. However, far from equalizing humanity, the 19th-century concept of Man introduced a hierarchy in the human species based on different levels of embryonic and evolutionary ...

  3. 2 days ago · The person just cited also compares such a relationship to what most of us would agree represents a standard heterosexual one, observing: “Think of a woman—she’s the one that ultimately ...

  4. 4 days ago · As Charles Darwin wrote in The Descent of Man, and Selection in Relation to Sex (1871): “To chip a flint into the rudest tool…demands the use of a perfect hand”. Even the most rudimentary stone tools required humans and human-anscestors to exhibit a degree of mental sophistication and physical dexterity that is rarely seen, if at all, in ...

  5. 5 days ago · They are also a time when boys and young men are learning about and experimenting with sex. Sex and (hetero)sexuality are means for establishing and proving manhood, especially during a developmental period when other avenues (e.g. financial success) may be less available.

  6. en.wikipedia.org › wiki › Homo_erectusHomo erectus - Wikipedia

    2 days ago · While Darwin considered Africa as the most probable birthplace of human ancestors, he also made the following statement about the geographic location of human origins in his book The Descent of Man, and Selection in Relation to Sex: "... it is useless to speculate on this subject; for two or three anthropomorphous apes, one the Dryopithecus ...

    • †H. erectus
    • Homo
  7. 2 days ago · In 2020, China’s sex ratio at birth (SRB) stood at 111.3, still exhibiting a notable bias. Son preference ranks as the most essential and fundamental reason for the skewed SRB. This study, using a mixed-methods approach, seeks to address what the temporal changes and regional differences in SRB and the gender preferences are in China, whether and why son preference persists, how people ...