... Biogeochemistry Ecological changes Human impacts Nowhere is climate change more evident than in the Arctic with an unprecedented loss of sea ice ( Landrum and Holland, 2020 ) and a warming of nearly four times the global rate ( Rantanen et al., 2022 ), that is, an Arctic amplification of climate change...

... “Avoiding Collapse: Human Impacts on the Biosphere,” which was presented at the American Association for Advancement of Science 2015 Annual Meeting in San Jose, California. We thank Jere Lipps for encouraging us to propose the symposium to AAAS, and Kim Locke and Anne Kapuscinski for encouraging us...