Explore earthworm anatomy and dissection in this 1961 educational film. Covering digestive, circulatory, excretory, nervous, ...

But just why the humble earthworm is so good at enriching the soil has remained a mystery until now. The secret is a unique digestive system that relies on metabolite molecules dubbed ...

These wiggly, slimy invertebrates might terrify the squeamish but their incredible eating habits are vital for our daily bread. As the planet’s great recyclers, gardeners have long known how ...