Regrésate en el tiempo y sigue las huellas de dinosaurios en todo el mundo. Ya sean hechas por unos algunos dinosaurios o en grandes grupos, estas huellas ofrecen pistas sobre el movimiento y el comportamiento de estas adorables y criaturas del pasado. ¿Qué dinosaurios hicieron las huellas y qué piensan los científicos que los dinosaurios las estaban haciendo cuando las dejaron?
Samantha BellDespués de rogar por una mascota, a un niño finalmente le dicen que “sí”. Ahora, es el momento de seleccionar a la mascota perfecta, pero ¿cuál será? Comenzando con el Reino Animal, el niño recorre varias clasificaciones de animales para tratar de escoger al mejor. Las medusas son limpias, pero mamá le dice que escoja un vertebrado. Los reptiles y los anfibios están descartados y las aves y los peces pronto lo estarán también. Esto sólo deja a los mamíferos, pero ¿a cuál? Un elefante no cabría por la puerta y un tigre sería muy difícil de sacar a pasear. ¿Qué puede hacer este niño?
A brief introduction to the flying pterodactyls, highlighting their size, habitat, food sources, and demise. Also included is a virtual field trip to a museum with notable pterodactyl fossils.
A brief introduction to the fearsome Tyrannosaurus rex, highlighting its size, habitat, food sources, and demise. Also included is a virtual field trip to a museum with notable T. rex fossils.
A brief introduction to the long-necked Apatosaurus, highlighting its size, habitat, food sources, and demise. Also included is a virtual field trip to a museum with notable Apatosaurus fossils.
A brief introduction to the armored Stegosaurus, highlighting its size, habitat, food sources, and demise. Also included is a virtual field trip to a museum with notable Stegosaurus fossils.
A brief introduction to the horned Triceratops, highlighting its size, habitat, food sources, and demise. Also included is a virtual field trip to a museum with notable Triceratops fossils.
A brief introduction to the speedy Velociraptor, highlighting its size, habitat, food sources, and demise. Also included is a virtual field trip to a museum with notable Velociraptor fossils.
A look at potential future developments in architecture, including self-contained cities, as well as computerized blueprints and other technologies that are currently considered state-of-the-art.
A look at potential future developments in warfare, including advancements in robot technology, as well as satellite-guided bombs and other technologies that are currently considered state-of-the-art.
A look at potential future developments in medicine, including the use of nanotechnology, as well as genetic mapping and other technologies that are currently considered state-of-the-art.
A look at potential future developments in communication, including holograms, as well as the Global Positioning System and other technologies that are currently considered state-of-the-art.
A look at potential future developments in transportation, including privately operated spacecraft, as well as electric cars and other technologies that are currently considered state-of-the-art.
A look at potential future developments in space exploration, including settlements on Mars, as well as orbiting telescopes and other technologies that are currently considered state-of-the-art.
An examination of the science behind the physical phenomenon known as energy, including relevant theories and history-making discoveries as well as topics of current and future research.
An examination of the science behind the abstract and physical concepts of space and time, including relevant theories and history-making discoveries as well as topics of current and future research.
An examination of the science behind the astronomical phenomena known as stars, including relevant theories and history-making discoveries as well as topics of current and future research.
An examination of the science behind the physical phenomenon known as light, including relevant theories and history-making discoveries as well as topics of current and future research.
An examination of the science behind the physical concepts of mass and matter, including relevant theories and history-making discoveries as well as topics of current and future research.
An examination of the science behind the physical phenomenon known as gravity, including relevant theories and history-making discoveries as well as topics of current and future research.
A history of the bathyscaphe Trieste's 1960 descent to the bottom of the ocean, detailing the challenges encountered, the individuals involved, the discoveries made, and how the expedition left its mark upon the world.
A fundamental exploration of battleships, including their size and firepower, history of development, gun turrets and other features, and famous models from around the world.
A fundamental exploration of tanks, including their size and firepower, history of development, crawler tracks and other features, and famous models from around the world.
A fundamental exploration of bombers, including their speed and carrying capacity, history of development, targeting systems and other features, and famous models from around the world.
A fundamental exploration of fighter jets, including their speed and maneuverability, history of development, cockpits and other features, and famous models from around the world.
