Feb 25, 2006
What are volcanoes? What causes them, and where can we find them? Some of the biggest volcanoes on Earth are under the ocean. Are the connected to Earth quakes and tectonic plates?
Feb 18, 2006
What do ears do? Do we really need them? How do they work, and what else do they do but help us hear?
Feb 10, 2006
What are black holes? Can we use them to travel through time? Where are they and what creates them?
Feb 3, 2006
What is Global Warming? Are humans creating it and is there anything we can do about it?