The Earliest Arrivals

“Nature abhors a vacuum,” is how the famous phrase goes. Whenever I see it, though, I always think it’s missing a follow-up sentence: “And evolution…

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The World in a Weed

Ever since the first flowering plants emerged about 130–140 million years ago, they and those that eat them have been engaged in a kind of…

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Spring Mosaic

For many of us, the past weeks of spring migration have been glorious, a bounty of warblers, tanagers, and dozens of other species passing through…

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