Not all animals need the same amount of sleep. Some people get by on five hours a day, while other animals (cats, for instance) can easily sleep upward of ten hours a day. So what is sleep, and why don't animals need the same amount? Tune in to find out.

Influenza is a virus that causes the flu, and it shares a long, lethal history with the human race. In this episode, Robert and Allison explore what's made the flu such a successful disease, and what you can do to avoid an infection.

Would you like a pet that can change its appearance and create decoys from ink? What if it also shot through the water via jet propulsion? Then the cuttlefish is the pet for you. Listen in as Robert and Allison take a closer look at the cuttlefish.

Many people find graveyards creepy, but what makes them so unsettling and spooky? In this special Halloween episode, Robert and Allison take you into the graveyard as they explore our cultural fears about cemetaries and share a little graveyard science.

Stephen Hawking is one of the world's most famous physicists, but why is he so famous? In this episode, Allison and Robert take a closer look at the fascinating career of Stephen Hawking.

Today mad scientists are common in fiction, and they appear in everything from comedies to science fiction. But they're also relatively recent. What made them so popular? Tune in and learn more about mad scientists in the public consciousness.

Military snipers use sophisticated technology and specialized techniques to wreak tremendous damage on enemy forces. But how do they work? In this episode, Robert and Allison break down the science behind snipers.

The periodic table is an invaluable tool for scientists across the planet -- but how does it work? In this episode, Allison and Robert explore the creation of the periodic table. Tune in to learn more about the history and structure of the periodic table.

For thousands of years people across the world have frightened (and entertained) each other by swapping monster tales, but how do these monsters hold up in the eyes of science? In this podcast, Robert and Allison break down the science behind monsters.

Each year, monarch butterflies fly south across North America, returning north in the spring. Normally the butterflies would never live long enough to complete the journey -- yet these are not normal times. Tune in to learn more about monarch butterflies.