An invasive alga known as didymo, or "rock snot," was discovered in Michigan's Au Sable River, raising concerns with environmentalists and the local fishing community.
Ever see one of your trees with so many caterpillars on it you can barely see any bark? Do they leave behind a weird sponge-looking mass? Those, my friend, are gypsy moth caterpillars, and that sponge is actually a mass of their eggs. Yes, it’...