Life's Little Mysteries: Science questions, answered

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

Pandas are descended from carnivores. Why do they eat an (almost) exclusively vegan diet?

Humans discovered fermentation thousands of years ago, but ancient brews would have tasted much differently from the beers of today.

Dinosaurs left behind clues about their maximum speeds, but do we know which dinosaur was the fastest?

Gravity plays a big role in burping, so could an astronaut burp in space?

The word "ninja" may bring to mind a person dressed mostly in black, but what they wore was actually quite different.

Cats sometimes catch and leave a "gift" for their humans. But why do cats give us dead mice, birds or other prey?

Scientists have identified some reasons why yawns spread from person to person.

Cooking is an essential part of human culture, but people haven't always written down recipes the way we do now.

That second wave of energy is a normal part of the human circadian rhythm, but lifestyle factors also play a role.