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198 points isaacfrond | 5 comments | | HN request time: 1.001s | source
1. dang ◴[] No.45098897[source]
[stub for offtopicness]
replies(3): >>45098674 #>>45098863 #>>45098875 #
2. ◴[] No.45098874[source]
3. ◴[] No.45098875[source]
4. simonh ◴[] No.45098879[source]
They’re not always or necessarily anthropogenic. That doesn’t mean they can’t be anthropogenic.
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5. palmfacehn ◴[] No.45099069{3}[source]
One of the reasons why control groups are so important in science.