They are colorful. They form amazing shapes. They feed on our food. And some are even deadly poisonous. Fungi! Explore the lives and life cycles of nature's clean-up champions that help keep our world free from dead leaves and other rotting material. After reading, put your knowledge to the test with a simple science project.

What is a fungus? -- The parts of a fungus -- Making more fungi -- Fungi clean-up crews -- Fantastic fungi -- Parasitic fungi -- Helpful fungi -- Poisonous fly agarics -- Mushroom farms -- Be a mushroom scientist.