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When Mark Abbott and his team pulled a 300-foot-long mud core from the bottom of a high lake in the Peruvian Andes, he hoped it could provide a glimpse into the last 160,000 years of climate change. Instead, the researchers revealed July 13 in the journal Nature, that the lake floor recorded glacier tides for more than 700,000 years – the longest glacier record for the tropics, and among the longest historical climate records, full point. In the lake’s mud, a multi-agency team found clues about how climate change could shape the modern world. “This is unlike anything we’ve had before,” said Abbott, a professor of geology and environmental sciences at the Kenneth P. Dietrich School of Arts and Sciences at the University of Pittsburgh. “We now have a land-based record of glaciation from the tropics that is in many ways the same as our record from polar ice caps and from the oceans, and it’s really lacking.” Researchers have known for decades that Lake Junin is a rare gem. Located more

Late Friday, Musk’s legal team declared its intention to terminate the merger agreement, reiterating its claim that Twitter did not provide him with sufficient information about accounts and saying it was his belief that the share of spam and fake accounts was “significantly higher” than the amount Twitter claims. They also point to the recent firing of two Twitter executives, the layoff of a third of its talent acquisitions and the departure of several senior executives (reportedly because some of them don’t want to stay on what they hoped to be Musk’s Twitter) as material changes that hurt the business. . Musk signed a deal with a very limited breakout clause and made an easy exit from it even more difficult by restating back in April that: “I don’t care about the economy at all.” It was conceived as the purchase of luxury goods by the world’s richest man at a time when his wealth (and ego?) was on the rise. Now he has buyer’s remorse. Twitter’s board has signaled it won’t let him o