Charles Darwin in the Articles

• Extinction
  Nature
  Endangered Plants
  Endangered Animals
  Dinosaurs
  Fossils
   
  

  Permian-Triassic extinction event

  The Permian-Triassic (P-T or PT) extinction event, sometimes informally called the Great Dying, was an extinction event that occurred approximately 251.0 million years ago (mya), forming the boundary ... > 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
• 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
• 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
• Early Mammals
  Paleontology
  Fossils
  Early Climate
  Origin of Life
  Human Evolution
   
  

  Mammoth

  A mammoth is any of a number of an extinct genus of elephant, often with long curved tusks and, in northern species, a covering of long hair. They lived during the Pleistocene epoch from 1.6 million ... > 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
• Human Evolution
  Early Humans
  Anthropology
  Cultures
  Fossils
  Evolution
   
  

  Homo floresiensis

  Homo floresiensis ("Man of Flores") is a species in the genus Homo, remarkable for its small body, small brain, and survival until relatively recent times. It is thought to have been contemporaneous ... > more
• Global Warming
  Climate
  Early 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
• Frogs and Reptiles
  Zoology
  Animals
  Early Mammals
  New Species
  Endangered Animals
   
  

  Reptile

  Reptiles (also called 'herps') are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane. Reptiles were defined as the set of animals that includes crocodiles, ... > more
• Sports Science
  Ancient Civilizations
  Construction
  Anthropology
  Robotics Research
  Weapons Technology
   
  

  Trebuchet

  A trebuchet, also sometimes called a trebucket is a medieval siege engine, a weapon employed either to batter masonry or to throw projectiles over walls. The invention of the trebuchet derives, no ... > more

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