[nudephil (OP)]

Listener Sue sent us the following:

I notice year after year that horse chestnut tree leaves brown and shrivel much earlier than other deciduous trees. Why is that?

I am also informed that a moth is getting into deciduous tree leaves to shrivel them - and I also notice that sycamore leaves are blackening locally...

Any answers to her question?

[chris]

We discussed this in this Naked Scientists episode: https://www.thenakedscientists.com/articles/interviews/late-summer-browning-leaf-miners

Also, we made this short video that explains what's going on: