A 1909 issue of Popular Science Monthly contains a piece about how plants react to radium. Since radium emits gamma radiation, which kills cells and mutates DNA, they don't generally respond well. So why are these plant roots curving towards it?
We've already established that radium's overall effect on the world is mixed at best, but one thing it did leave behind is cool science experiments. After its discovery in 1898, scientists all over the world got samples and started experimenting. This particular experiment exposed plants to radiation in many different ways. Most of the plants were blighted, but there was one unusual result.