The first assessment of toxic heavy metal pollution in the Southern Hemisphere over the last 2,000 years - Phys.org
phys.orgSubmitted by physorg8953 in science
Human activity, from burning fossil fuels and fireplaces to the contaminated dust produced by mining, alters Earth's atmosphere in countless ways. Records of these impacts over time are preserved in everlasting polar ice that serves as a sort of time capsule,…