Learn the science behind why cozy scents of fall, like crisp leaves, bonfires, and pumpkin spice, boost your mood and spark ...

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.

For years, people have said sharks can smell fear — but is it true? Scientists dive deep to uncover what sharks actually sense beneath the surface. From sweat to heart rate changes, every detail is ...