Emily Kwong and Regina Barber of NPR's Short Wave talk about a comet visiting from interstellar space, caterpillars that eat and break down plastic, and how animals' sense of smell varies by altitude.

The common hedgehog, though small and seemingly harmless, is a surprisingly formidable predator. Found in forests and glades across Europe, these spiny creatures are capable of taking down a wide ...

When they can find them, they also eat fruits, vegetables, leaves, bark, mushrooms, and insects, not to mention whatever they ...