Na 2017, ndị nyocha Ulf Bengtsson na Lars Hylander nwere edemede e bipụtara gbasara ọla kọpa dị elu na ịba ụba mercury vapo emission. Ntinye a site na Atlas of Science na-enye nyocha banyere nyocha na ihe ọ pụtara.
Pịa ebe a gụkwuo banyere nyocha ahụ.
