From tulips to tundra, plants in bloom await at the Missouri Botanical Garden in St. Louis. Join your friends from the Evergreen Project Adventures at http://mbgnet.net and discover why seeding is believing. This Web site is full of way-cool graphics, activities and adventures. At Investigations, you'll get the lowdown on osmosis by watching a potato drink water. Visit the Leaf Collection, where you'll get a close-up look at leaves from the Chinese Elm, Red Maple and Saucer Magnolia trees. Or read the Great Tree's Story, about life in a temperate rainforest. The site also shows how to cultivate a project garden at your school. Just watch out for those munchers, caterpillars and other bugs, who may make a meal of your hard work. You'll even train honeybees to come to a "flower" made of cardboard. And, in addition to grasslands and taiga, learn about one of the world's most interesting biomes-the desert. Bring water for this trip!

Seven biomes, or living worlds, are thriving at http://library.thinkquest.org/C0113340 . This site examines the climates, land forms and life that make up Earth. In each section, you can test your geographical knowledge with a Quick Question. Then post your views in the Your Say forums. The Impact section shows how human interference has affected Earth's biomes. Get up close and personal with your planet at this eco-friendly site.

Geography4Kids provides a path to exploration, discovery and enlightenment, and it all begins at www.geography4kids.com . Learn about nearly every geographical aspect of our Earth, from the Hydro-sphere to Our Biosphere. You can find out about Earth's Climates, what affects them and how they change from year to year. Get an Energy surge and discover how solar radiation makes the world go around. The shaky side of Earth's Terrasphere includes earthquakes and volcanoes. Get down to Earth today.

Your mission, if you choose to accept it, is Mission: Biomes at http://earthobservatory.nasa.gov/Experiments/Biome . Bill Botanist will help you answer the age-old question "To Plant or Not to Plant?" Take a walk through the Temperate Deciduous Forest and collect colorful leaves. Then, discover why fires are common in the Shrublands during hot, dry summers. You can find out about the grasses in the Grasslands. Or learn the difference between a temperate and a tropical Rainforest.

Get a feel for nature in the Ozarks at the Bryant Creek Watershed Atlas at www.watersheds.org . With boatloads of activities, you'll never want to leave this wet wonderland. Feeling hungry? Pack a macroinvertebrate lunch and watch a movie starring snails, frogs and worms. You can meet an old-time folk healer who prescribes herbs for everyday ailments. Explore Bryant Creek and its old mills and tributaries in Places. Then head outdoors to wander through wild caves.