Paleontology
- 			 Paleontology PaleontologyThe warm jungles of ancient FranceChemical analyses of amber excavated near Paris suggest that France was covered with a dense tropical forest about 55 million years ago. By Sid Perkins
- 			 Paleontology PaleontologyWhales started smallThe ancestors of whales, some of which are the largest creatures ever to evolve, probably were mammals no larger than a fox. By Sid Perkins
- 			 Paleontology PaleontologyStruck from aboveEvidence of an extraterrestrial object striking Earth at the height of the last ice age comes from micrometeorites embedded in the tusks of creatures that were grazing the Alaskan tundra when the object burst in the air above. By Sid Perkins
- 			 Paleontology PaleontologyA toothy smileNigersaurus boasted more than 500 teeth, arranged in rows across its mouth. 
- 			 Paleontology PaleontologyHuge, yet not quite life-sizeThe Carnegie Museum of Natural History in Pittsburgh will unveil the world's largest dinosaur mural on Nov. 21, when its dinosaur halls reopen after a 30-month, $36 million renovation. By Sid Perkins
- 			 Paleontology PaleontologyBack from the Dead?The long-term disappearance of creatures from the fossil record and their later reemergence can provide insights into ancient environmental conditions and the trustworthiness of the fossil record itself. By Sid Perkins
- 			 Paleontology PaleontologyMeet the old wolves, same as the new wolvesThe dire wolf, an extinct species preserved in abundance at the La Brea tar pits, seems to have had a social structure similar to that of its modern-day relatives. By Sid Perkins
- 			 Paleontology PaleontologyDinosaurs matured sexually while still growingDistinctive bone tissue in fossils of several dinosaur species suggests that the ancient reptiles became sexually mature long before they gained adult size. By Sid Perkins
- 			 Paleontology PaleontologyDeinonychus’ claws were hookers, not rippersThe meat-eating dinosaur Deinonychus probably used the large, sicklelike claw on its foot to grip and climb large prey, not disembowel it. By Sid Perkins
- 			 Paleontology PaleontologyThe first matrushkaA newly found fossil preserves one creature inside another that lies nestled inside yet another, a Paleozoic version of the Russian nesting dolls known as matrushkas. By Sid Perkins
- 			 Paleontology PaleontologyDigging the Scene: Dinos burrowed, built densDinosaurs remains fossilized within an ancient burrow are the first indisputable evidence that some dinosaurs maintained an underground lifestyle. By Sid Perkins
- 			 Paleontology PaleontologyFossil mystery solved?Experiments in a Florida swamp show how aquatic creatures can get trapped and preserved in amber, a form of hardened tree sap. By Sid Perkins