Plant science for plant people.

Bean plants remember droughts their parents survived. The memory isn't mystical; it lives in a tiny community of organisms in the soil around their roots, shaped by the parent's thirst and passed to children that never went thirsty themselves. A generation later, they still carry it.

Pull back from that one root zone, and the picture gets bigger and sadder. Sixty years of European plant surveys, 18,000 time series, show our meadows and wetlands quietly tilting. Nitrogen-loving weeds are spreading into pastures and roadsides where they didn't grow before. Delicate bog and fen plants, the ones that need lean, quiet soil, are fading. Mountain species are creeping uphill, chasing cool air they used to take for granted. Invisible year to year. Undeniable across a lifetime.

So plants record us. Every drought, every fertilizer plume, every warm spring gets written into the soil and the seeds. The consoling part is that they also clean up after us: cattails pulling antibiotics out of farm runoff, marigolds sponging toxic metals from poisoned ground. Turns out the world's best environmental archivists are also its best janitors.