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What is Hay Fever? Doctors and researchers who specialize in allergies prefer the term "allergic rhinitis"
Is Beef Jerky Safe? A little extra heat can help jerky producers keep out microbes.
Do Astronauts Take iPods to Space? Astronauts can take iPods to space among up to 20 small, personal items.
Are Humans Meant to be Monogamous? In the animal kingdom, loyal partners are rare.
What's the Deepest Canyon? Are you looking on Earth, or in the vast solar system?
Who Was the First Person to Fly? Orville and Wilbur might jump to mind. But the Wright Brothers were half a century late.
What is a Quasar? A single quasar could outshine an entire galaxy.
How Big is Jupiter? How Big is Jupiter?
Why Do We Need Leap Year? Why Do We Need Leap Year?
How Quickly Can Bacteria Multiply? Give bacteria a warm bed and food to eat and they will start to multiply immediately.
Is Love Good For You? While most things are best taken in moderation, love is something you might want to give and receive freely this Valentine's day.
What are X-rays? An X-ray photon can be hundreds or thousands of times more energetic than a photon of visible light.
What is Relativity? Einstein's theory revolutionized how we view time, space, gravity and spaceship headlights.
What Is the World’s Fastest Animal? If animals held their own Olympics, there’d be several gold medal winners for speed.
Why Does Outer Space Look Black? The color black usually signals the absence of light. But inside the solar system, space is filled with light.
How Does Scent Travel? To get to your nose, a rosy smell rides the wind. Unfortunately, stinky scents travel the same route.
Why Do We Die?
What Is an Omnivore?
What Is a Carnivore? In the wild, carnivores are king. They prey on other animals. They eat primarily meat.
What Is an Herbivore? Herbivorous animals are vegetarians. They only eat plants.
Do All Turtles Have Shells? Sort of. Only the leatherback sea turtle's shell is on the inside.
What's the Coolest Place in the Universe? It's not Miami Beach, if that's what you were thinking. Nor is it the North Pole.
Why Aren't Turkey Eggs Sold at the Grocery? Gobbling turkeys do lay eggs. But selling them in grocery stores would have its drawbacks.
Why Aren't Turkey Eggs Sold at the Grocery? Gobbling turkeys do lay eggs. But selling them in grocery stores would have its drawbacks.
How Do Scientists Know the Universe is Expanding? We thought we’d ask Geza Gyuk, Director of Astronomy at the Adler Planetarium and a research scientist at the University of Chicago. Here's what he said:
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