原文已被隐藏，你可用 快捷键 - 或点击 显示原文 按钮来查看原文
第1段
1 .This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?
该句暂无译文！
2 .About 5,000 years ago in Peru, culture kicked into high gear.
该句暂无译文！
3 .During what's called the Late Archaic Period, South Americans formed permanent communities with complex architecture, religion and agriculture.
该句暂无译文！
4 .And now scientists have shown that maize played a big part in this development.
该句暂无译文！
5 .The study is in the Proceedings of the National Academy of Sciences.
该句暂无译文！
6 .For decades, researchers have argued about whether corn was a dietary staple in the Late Archaic.
该句暂无译文！
7 .The answer, it turns out, was hidden in the turf, tools and toilets of 13 archaeological sites along the coast of Peru.
该句暂无译文！
8 .Of 126 soil samples dating back to the Late Archaic, 48 percent contained maize pollen.
该句暂无译文！
9 .Of 14 stone tools found at one site, 79 percent still carried traces of maize.
该句暂无译文！
10 .And finally, scientists analyzed 62 human and canine coprolites, or fossilized feces.
该句暂无译文！
11 .Maize was the dominant starch, present in 69 percent of the ancient samples.
该句暂无译文！
12 .Some of the evidence is literally crap,
该句暂无译文！
13 .but the conclusion isn't: a corny dietary staple helped drive the growth of civilization in the Late Archaic.
该句暂无译文！
14 .Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.
该句暂无译文！