Passage A There are more than 160 known species of chameleons. The main distribution is in Africa and Madagascar, and other tropical regions, although some species are also found …
Passage What has fins like a whale, skin like a lizard, and eyes like a moth? The future of engineering. Andrew Parker, an evolutionary biologist, knelt in the baking …
Passage Dugongs are herbivorous mammals that spend their entire lives in the sea. Their close relatives the manatees also venture into or live in fresh water. Together dugongs and …
Passage A It’s fall in North America, and millions of Monarch butterflies are migrating to warmer climates for the winter, heading either to the Californian coast or to certain …
Passage Birds are forced to migrate for a number of reasons, including seasonal climate cycles, a scarcity of food or of appropriate nesting sites. Established routes are followed, many …
Passage A Rhythm of the seasons cannot always be relied upon. At times the tropical Pacific Ocean and large expanses of the global atmosphere seem to be marching to …
Passage A The Canada lynx is like a gray ghost of the north—elusive, evading human contact. It stands about 20 inches tall at the shoulder but weighs about 20 …
Blue-footed Boobies 2 Passage A Boobies are a small group of seabirds native to tropical and subtropical oceans throughout the world. Their diet consists mainly of fish. They are …
American Black Bear Passage Not all black bears are black—their fur can range in color from pure white to a cinnamon color to very dark brown or black. Most …
Amateur Naturalists Passage A Tim Sparks slides a small leather-bound notebook out of an envelope. The book’s yellowing pages contain beekeeping notes made between 1941 and 1969 by the …
