Deep in the Arctic, scientists are experimenting with geoengineering to counter global warming. WSJ exclusively followed a Dutch startup testing refreezing techniques to slow the melting of sea ice. Producers: Eve Hartley, Laura Ma Visuals: Max Thurlow, Eve Hartley, Ksenia Shaikhutdinova Animation: Annie Zhao Additional visuals: AP #climate #climatechange #seaice #arctic #environment #geoengineering #wsj #wallstreetjournal #thewallstreetjournal