From National Geographic（國家地理雜誌）:
"Once some groups of modern humans began their migration out of Africa some 60,000 years ago, they kept going until they had spread to all corners of Earth. How far and fast they went depended on climate, the pressures of population, and the invention of boats and other technologies. Less tangible qualities also sped their footsteps: imagination, adaptability, and an innate curiosity about what lay over the next hill."
出處：https://education.nationalgeographic.org/resource/global-human-journey/
今早看到這張特殊的地圖，和（鏈接）文中遺傳學家對“現代”人類喜歡冒險基因變異的說法，覺得很有趣。說不定你和我都是屬於這20%有"DRD4-7R"冒險基因的人（或他們的家人），所以我們會像蒲公英的絨球一樣，飄到了離第一故鄉這麽遠的地方哈。
