20 Apr. 2020 marks the 10-year anniversary of the Deepwater Horizon oil spill in the Gulf of Mexico.• Crude oil, spilled over 87 days, impacted 687 miles of Gulf coast wetlands.Oil from the Deepwater Horizon spill laps around the mouth of the Mississippi River Delta in this 24 May 2010 image from the NASA Terra spacecraft.The oil appears silver while vegetation is red. Photo courtesy of NASA.

Ringed seal liver is a delicacy in traditional Arctic communities-one that local health authorities in Iqaluit, Nunavut, Canada warned women of childbearing age to avoid consuming in 2011. Though the warning eased in 2019, it bore signs of the impact global consump-tion can have even on communities in the most remote regions.The seal liver, you see, contained incredibly high concentrations of mercury, and it's not coming from sources in the Arctic.The Arctic is a sink for global contaminants. In 2018 the United Nations