Kangaroos are marsupials. They carry their babies in pouches. When a baby is born it crawls blind and helpless into its mother's pouch, feeds on her milk and stays there until it is quite large.
Redwoods/Treetop Ecology
The tallest forests on Earth are the redwoods of northern California. Did you know that they depend on Fog? We're studing how these trees work, and we're learning new stuff all the time! For instance, tiny (250 microns) aquatic crustaceans (cousins of lobsters and crabs), which crawled straight up the trunks of redwoods are thriving in mats of moss and organic debris some 65 meters above the ground in the forest canopy. People used to think that they only lived at the bottoms of streams! The redwoods are disappearing, so Global Forest scientists are figuring out ways to protect them.