• Earth is our spaceship
• Weather is local and temporary
• Climate is regional and long-term
• Whatever happens in Earth's climate system affects everything else
• Earth has been getting warmer fast, causing lots of serious problems
• Humans are causing this warming

What's the big deal with carbon?

• Is there a dinosaur in your tank?
• How does the carbon get into living things?
• How does the carbon get out of living things?
• What does carbon do in the air?

What is the greenhouse effect?

• What is a greenhouse?
• How is Earth like a greenhouse?
• Is it warm in here, or is it just me?
• Why can't we just open a window -- or planet a tree?
• Don't clouds keep Earth cooler?
• Or do clouds make Earth warmer?

How do we know the climate is changing?

• so what if Earth gets a tiny bit warmer?
• Why is Earth getting warmer and what does carbon have to do with it?
• How do scientists know what Earth was like half a million years ago?
• How can a little temperature rise melt so much ice?
• Doesn't rising sea level just bring us closer to the beach?
• How does climate change affect other species?

What is happening in the ocean?

• Is the ocean important? After all, we live on land.
• How does the ocean soak up energy?
• How does the ocean soak up CO₂?
• How does the ocean affect climate?
• Does the salt in the ocean do anything?

What can we do to help?

• How can we help nature to help us?
• How can I reduce my "carbon footprint"?
• How can I reduce my trash pile?
• Do I need to save water too?
• How can I make a real difference?

What else do we need to find out?

• Can NASA help scientists answer all their questions?
• Do clouds make Earth warmer or cooler?
• Do aerosols make Earth warmer or cooler?
• Do the Sun's natural cycles affect our climate?
• How much of the CO₂ that humans produce can Earth clean out of the air?
• How will melting ice sheets affect massive ocean currents?
• How will climate change affect distribution of rain and snow fall?
• How high and how fast will sea level rise?