Naturalist Doug Tallamy says our lawns could support a "home-grown national park." Most gardeners don't think of bugs unless it's how to kill them, he said, but insects are crucial to restoring native ecosystems.
Charles Darwin ushered in modern biology with his explanation of how different species evolve. But his work leaves us with a paradox: Why should dozens or even thousands of species coexist in a single habitat? The theory suggests they ought to duke it out until just a few winners dominate.