In climate news, temperatures near the entrance to the Arctic Ocean in northwest Russia reached a record-shattering 84 degrees Fahrenheit over the weekend, in an area where high temperatures are normally 30 degrees cooler this time of year. This comes as the National Snow and Ice Data Center recorded a record-low sea ice extent for the Arctic Ocean in April, noting that almost all of the sea ice more than four years old is gone. Over the weekend, meteorologists measured carbon dioxide levels in the atmosphere at over 415 parts per million—the highest level in human history, and a concentration that’s not been seen on Earth in over 3 million years.