Lead pollution recorded in Greenland ice indicates European emissions tracked plagues, wars, and imperial expansion during antiquity by McConnell, JR, Wilson, AI, Stohl, A, Arienzo, M, Chellman, N, Eckhardt, S, Thompson, E, Pollard, AM, Steffensen, JP

Pervasive Arctic lead pollution suggests substantial growth in medieval silver production modulated by plague, climate, and conflict by McConnell, JR, Chellman, NJ, Wilson, AI, Stohl, A, Arienzo, MM, Eckhardt, S, Fritzsche, D, Kipfstuhl, S, Opel, T, Place, PF, Steffensen, JP

Pan-European atmospheric lead pollution, enhanced blood lead levels, and cognitive decline from Roman-era mining and smelting by McConnell, JR, Chellman, N, Plach, A, Wensman, SM, Plunkett, G, Stohl, A, Smith, N, Vinther, BM, Dahl-Jensen, D, Steffensen, JP, Fritzsche, D, Brugger, SO, McDonald, BT, Wilson, AI

Extreme climate after massive eruption of Alaska’s Okmok volcano in 43 BCE and its effects on the late Roman Republic and Ptolemaic Kingdom by McConnell, JR, Sigl, M, Plunkett, G, Burke, A, Kim, WM, Raible, C, Wilson, AI, Manning, JG, Ludlow, FM, Chellman, NJ, Innes, HM, Yang, Z, Larsen, JF, Schaefer, JR, Kipfstuhl, S, Mojtabavi, S, Wilhelms, F, Opel, T, Meyer, H, Steffensen, JP