Acid rain, economic development, and a century of mining pollute Rocky Mountain waters.
In the tendency to assume that science-based conclusions are objective and reliable, public health tragedies are allowed to occur repeatedly.
Ukufinyelela kwamahhala okungenamkhawulo, Sesha noma yini Azikho Izikhangiso, Izigidi zeziqu futhi zengezwa nsuku zonke, Wonke amapulatifomu nokusetshenziswa ngokugcwele, Noma kuphi nanoma nini
