HN Explorer

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Kerbonut
What if it’s contamination in the extraction or measurement equipment?
dreamcompiler
They seem to have addressed that pretty carefully.
fxtentacle
Misleading title

Small plastic can slide down, that's why you can find it in the 300 year layer.

exegete
Did the title change? It currently is: “Downward migrating microplastics in lake sediments are a tricky indicator for the onset of the Anthropocene”
logtempo
looks like the title is different than the one showing up in hn
NoPicklez
Is "Microplastics found in 300 year old lake sediment"
ETH_start
Little bit close minded that the scientists didn't consider the obvious alternative hypotheses: that those microplastics are relics of a lost, advanced civilization.
guax
Clearly aliens.
scovetta
This is why you need to be careful when time traveling.
virusduck
Reminds me of that age old question... We find all these dinosaur fossils in mines for metals and fuel. It makes you wonder if they were just another bunch of animals, what were they all doing mining for industrial materials?
burnerthrow008
This is also why I am very suspicious of homicide detectives. Someone really ought to investigate these people who are always seen in the vicinity of a murder… I mean, that’s your prime suspect right there.