On today’s episode of “how it’s made”: Thorns!
The pointy defence system relied on by many plants has an interesting origin story. Thorns start out as branch-like structures that grow out of the main stem and then, all of a sudden, turn into sharp death spikes. Now, researchers have not only figured out how that happens, but also how it can be stopped. … Read more
Unlike animals, plants can’t make a run for it when attacked by predators: they have to stand and fight. And fight they do, with a variety of defences designed to prevent themselves from becoming food. But of course, in the evolutionary tug-of-war of nature, the predators themselves have developed specialised weapons to surmount these blockades.
And for whitefly, the secret’s in the spit!… Read more