Call this pollution? You kids today ...

After investigating some historical ice cores, the awkward truth comes out. Pollution was worse 100 years ago, primarily due to coal burning. And this was *real* pollution, you punks. Toxic heavy metals like cadmium and lead, not this wimpy carbon dioxide. Pah! Plants make carbon dioxide!

And we used to trudge to school through that toxic snow. Uphill, both ways!