Antoniades, D. et al. Abrupt environmental change in Canada’s northernmost lake inferred from fossil diatom and pigment stratigraphy. Geophys. Res. Lett. 34, L18708 (2007). Babaluk, J. A. et al. Evidence for non-anadromous behaviour of arctic charr ( Salvelinus alpinus) from Lake Hazen, Ellesmere Island, northwest Territories, Canada, based on scanning proton microprobe analysis of otolith strontium distribution. Arctic 50, 224–233 (1997). O’Reilly, C. M. et al. Rapid and highly variable warming of lake surface waters around the globe. Geophys. Res. Lett. 42, 10773–10781 (2015).

Gantner, N. et al. Temporal trends of mercury, cesium, selenium, thallium in arctic char ( Salvelinus alpinus) from Lake Hazen, Nunavut, Canada: effects of trophic position, size, and age. Environ. Toxicol. Chem. 28, 254–263 (2009). McGhee, R. The Last Imaginary Place: A Human History of the Arctic World (Oxford University Press, Oxford, New York, 2005). Heathcote, A. J., Anderson, N. J., Prairie, Y. T., Engstrom, D. R. & del Giorgio, P. A. Large increases in carbon burial in northern lakes during the Anthropocene. Nat. Commun. 6, 10016 (2015).

California Coastal Redwoods

Rühland, K. M., Paterson, A. M. & Smol, J. P. Lake diatom responses to warming: reviewing the evidence. J. Paleolimnol. 54, 1–35 (2015). The California redwoods are truly more majestic than I could ever convey, and something that every resident and visitor should see at least once. If you ever find yourself in my beautiful Golden State, do not leave without seeking them out.

Katherine told Glamour, "We four Townsend girls competed about everything. Grades. Sports. Who could be loudest at the dinner table." Toughness is clearly in their genes. Their mother, Kathleen Townsend told The Atlantic about birthing three of her girls at home. When she was in labor with Katherine, she walked about the house and even watched the entire film version of Taming of the Shrew. Kathleen told The Atlantic, "I liked Elizabeth Taylor's character so much that I decided to change my new daughter's first name from Rose to Katherine." van Oldenborgh, G. J. KNMI Climate Explorer (Koninklijk Netherlands Meteorologisch Institut (KNMI), De Bilt, The Netherlands, 1999).

ABC World News anchor David Muir will lead the network’s coverage of the climate conference, joined by chief White House correspondent Cecilia Vega and foreign correspondent Maggie Rulli. President Biden and former President Obama are slated to attend. Muir will also report from Madagascar, the island nation that the World Food Program says could be the first place to see a climate change-induced famine. ABC says Muir will be the first American journalist to access southern Madagascar through the World Food Program. Perry, E., Norton, S. A., Kamman, N. C., Lorey, P. M. & Driscoll, C. T. Deconstruction of historic mercury accumulation in lake sediments, Northeastern United States. Ecotoxicology 14, 85–99 (2005). Emmerton, C. A. et al. Net ecosystem exchange of CO 2 with rapidly changing high Arctic landscapes. Glob. Change Biol. 22, 1185–1200 (2016). Two down, one to go. I came into this year wanting to run at all three and medal at all three. I have done two out of three so far.

Paleoecological Environmental Assessment and Research Lab, Department of Biology, Queen’s University, Kingston, ON, K7L 3N6, Canada

Robertson, M. J., Scruton, D. A., Gregory, R. S. & Clarke, K. D. Effect of Suspended Sediment on Freshwater Fish and Fish Habitat (Fisheries and Oceans Canada, 2006). Smol, J. P. et al. Climate-driven regime shifts in the biological communities of arctic lakes. Proc. Natl. Acad. Sci. USA 102, 4397–4402 (2005). The 29-year-old Scot, who secured her first ever Commonwealth medal on Saturday with 800m bronze after an appeal over the photo finish from Jamaica was rejected, decimated the field on the final day of athletics at the Alexander Stadium. Sanchez-Cabeza, J. A. & Ruiz-Fernandez, A. C. Pb-210 sediment radiochronology: an integrated formulation and classification of dating models. Geochim. Cosmochim. Acta 82, 183–200 (2012).