Scientific American Sep 2018

September 2018 ScientificAmerican.com 59 ing that neural circuits can develop multiple uses. One recent study showed that some n ...

60 Scientific American September 20 18 BY CHET C. SHERWOOD GRAPHICS BY MESA SCHUMACHER 60 Scientific American September 2018 Det ...

September 2018 ScientificAmerican.com 61 FOXP2 SRGAP2C NOTCH2NL Mirror neuron system Language circuit Von Economo neuron Synapse ...

62 Scientific American September 20 18 3.3–÷ÎÀ®Ÿ ̈ ̈Ÿ¹ ́ĂyDàåD‘¹Ê®ĂDË 2.1–ÀÎê®ĂD ÀÎμ®ĂDÀŽñ ...

September 2018 ScientificAmerican.com 63 Cat "¹ ́‘žŠ ́ ́ym ȟ ̈¹ïĀ›D ̈y Human $D`DÕùy ̈yțD ́ï Cerebral c ...

64 Scientific American September 20 18 LAST HOMININ STANDING WHY DID HOMO SAPIENS ALONE SURVIVE TO THE MODERN ERA? PA RT 2 Us an ...

September 2018 ScientificAmerican.com 65 ...

66 Scientific American September 2018 By around 40000 years ago based on current evidence H.  sapiens found itself all alone th ...

September 2018 ScientificAmerican.com 67 a cultural phase known as the Middle Stone Age (MSA) heralded the emergence of people w ...

68 Scientific American September 2018 cies from run-of-the-mill hominin to world-conquer- ing force of nature? Scientists are in ...

September 2018 ScientificAmerican.com 69 owe our extinct relatives a substantial debt of grati- tude for their contributions to ...

70 Scientific American September 2018 THE ORIGINS OF MORALITY A AS :: ILLUSTRATION BY YUKO SHIMIZU HOW WE LEARNED TO PUT O ...

September 2018 ScientificAmerican.com 71 ...

72 Scientific American September 2018 There have traditionally been two answers to such questions. First it makes sense for indi ...

September 2018 ScientificAmerican.com 73 goals and to feel sympathy for and help existing or prospective partners. If an individ ...

74 Scientific American September 20 18 “We” before “me” Morality of right and wrong Self- interest 6 million years befor ...

September 2018 ScientificAmerican.com 75 particularly for group defense. The dependence of individuals on the group thus led to ...

76 Scientific American September 2018 WHY WE FIGHT A S :: ILLUSTRATION BY YUKO SHIMIZU WAR M AY NOT BE IN OUR NATURE AFTER ...

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78 Scientific American September 2018 If war expresses an inborn tendency then we should expect to find evidence of war in small ...