Changes in Alaska’s rivers: they began to resemble vinegar

Recent research suggests that rivers in Alaska are suffering from pollution, causing their water to turn rusty and orange, reminiscent of vinegar. Scientists paid attention to 75 streams that have changed their color and chemical composition over the past decade.

Water samples showed high levels of various metals such as iron, zinc, copper, cadmium and nickel, indicating serious environmental problems. The reason for these changes, according to scientists, is an increase in temperature, which caused the melting of permafrost and the migration of metals into water sources.