Evolution Articles

• Extinction
  Dinosaurs
  Endangered Animals
  Endangered Plants
  Fossils
  Early Climate
   
  

  Extinction event

  An extinction event (also extinction-level event, ELE) occurs when a large number of species die out in a relatively short period of time. Since life began on Earth, a number of major mass ... > more
• Archaeology
  Ancient Civilizations
  Cultures
  Human Evolution
  Fossils
  Early Climate
   
  

  Cave painting

  Cave or rock paintings are paintings painted on cave or rock walls and ceilings, usually dating to prehistoric times. Rock paintings have been made since the Upper Paleolithic, 40,000 years ago. They ... > more
• Birds
  Early Birds
  Bird Flu Research
  Zoology
  New Species
  Animals
   
  

  Bird

  Birds are bipedal, warm-blooded, oviparous vertebrates characterized primarily by feathers, forelimbs modified as wings, and hollow bones. Birds range in size from the tiny hummingbirds to the huge ... > more
• Earth Science
  Environmental Issues
  Global Warming
  Geomagnetic Storms
  Near-Earth Object Impacts
  Anthropology
   

  End of civilization

  The end of civilization or the end of the world are phrases used in reference to human extinction scenarios, doomsday events, and related hazards which occur on a global ... > more
• Global Warming
  Early Climate
  Climate
  Ice Ages
  Fossils
  Environmental Issues
   
  

  Geologic temperature record

  This article is devoted to temperature changes in Earth's environment as determined from geologic evidence on multi-million to billion (109) year time scales. The last 3 million years have been ... > more
• Dinosaurs
  Extinction
  Geography
  Nature
  Environmental Policy
  Marine Biology
   

  Cretaceous

  The Cretaceous period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic period, about 146 million years ago (Ma), to the beginning of the Paleocene epoch ... > more
• Dinosaurs
  Paleontology
  Extinction
  Tyrannosaurus Rex
  Early Birds
  Fossils
   
  

  Dinosaur

  Dinosaurs were vertebrate animals that dominated terrestrial ecosystems for over 160 million years, first appearing approximately 230 million years ago. At the end of the Cretaceous Period, 65 ... > more
• Fossils
  Paleontology
  Dinosaurs
  Early Climate
  Early Mammals
  Ecology
   
  

  Trace fossil

  Trace fossils are those details preserved in rocks that are indirect evidence of life. While we are most familiar with relatively spectacular fossil hard part remains such as shells and bones, trace ... > more
• Cultures
  Ancient Civilizations
  Archaeology
  Early Climate
  Early Humans
  Human Evolution
   
  

  Stone Age

  The Stone Age is a broad prehistoric time period during which humans widely used stone for toolmaking. Stone tools were made from a variety of different kinds of stone. For example, flint and chert ... > more
• Dinosaurs
  Geography
  Environmental Policy
  Charles Darwin
  Origin of Life
  Paleontology
   

  Jurassic

  The Jurassic period is a major unit of the geologic timescale that extends from about 200 Ma (million years ago) at the end of the Triassic to 146 Ma at the beginning of the Cretaceous. The Jurassic ... > more
• Tyrannosaurus Rex
  Dinosaurs
  Nature
  Paleontology
  Fossils
  Evolution
   
  

  Tyrannosaurus

  Tyrannosaurus is a genus of tyrannosaurid theropod dinosaur. The species Tyrannosaurus rex, commonly abbreviated to T.rex was one of the largest land carnivores of all time. It hails from what is now ... > more
• Dinosaurs
  Fossils
  Paleontology
  Tyrannosaurus Rex
  Evolution
  Human Evolution
   
  

  Albertosaurus

  Albertosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period, more than 70 million years ... > more

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