Snails’ Homing Instincts Put to the Test

It’s a fact that I’d thought widely known in gardening circles—snails return to feast on your vegetables even after you’ve chucked them (the snails, that is) over the fence into your neighbour’s garden (though, of course, no responsible gardener does that).

Over the years, I’ll wager that quite a few gardeners have marked snails’ shells with paint or Tippex, sent them flying, and had a moment of bitter satisfaction when they later found said snails finishing off the broccoli. However, it's a subject that has now caught the scientific world's attention.