'It was a huge, huge disruption to all of our science and also our long-standing cooperation with Russian institutions,' Thomas Opel told Newsweek.
"This is the first time that a frost of that age was really dated somewhere in Siberia," Opel said."When we got the dating results back from our samples, we were so surprised. We thought 'Oh, wow, this is really old.'"
However, after visiting the slump in 2017 and 2019, this time-sensitive resource has become inaccessible to Opel and his team. "We can track past temperatures using stable isotopes of oxygen and hydrogen in the ice in the permafrost, so they give us information on past winter temperatures," Opel said."But we can also do all kinds of paleoecology.""There were some spectacular finds—for example, a baby horse from the last Ice Age," Opel said.
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