Résultats lu par "David Armstrong" dans Toutes les catégories

Native American tribes from the Northwest Coast learned to use the wood of cedar trees for many of their daily needs. Tribes used recycling to conserve resources hundreds of years ago. Pounding bark until it was fluffy to make diapers and with special thin branches called withes, cedar trees were soaked and used to make rope. What special technique did tribes use to take down big cedar trees?

Learn what bird has the ability to sleep while flying through the sky–the albatross! With a wingspan of 10 feet, this sea bird glides over the warm Southern waters looking for squid and fish to eat! They spend most of their time flying except when eating or feeding babies. Parent duty is shared by these loyal birds who stay with their mate for life. Guess where the albatross flies to lay its egg?

Yo and his father decide to put a new bird feeder in the yard for the birds migrating to warmer weather. Yo puts his arms out and pretends to fly around the yard like a bird and almost forgets to help his father add sunflower seeds to the bird feeder. Yo notices one bird uses its beak to crack and separate shells from seeds causing a big mess. What will happen if bird seeds fall to the ground?

Could there be life forms on planetary moons such as Europa, Jupiter’s icy moon or Titian, one of Saturn’s largest moons? Although our moon is made of mostly rock, astronomers believe life may exist on other moons! Scientists know liquid water is needed to support life, and Europa has plenty of it. What other key ingredients are needed for life to exist in our solar system?

Hector is leaving his old life to head Westward to be a prospector with his uncle in California. During his journey, his stagecoach is attacked by a robber! Hector and the other travelers must save themselves and their few worldly possessions.

Luther heard about the legend of Big Claw, a giant lobster who wreaks havoc on anyone attempting to capture him. One summer, Big Claw is finally caught and taken to a restaurant to become a tourist attraction. Upset by this, Luther wants to help Big Claw escape back to the ocean. Will his plan work?

Connor is mad that he has to spend his summer vacation with his cousins. Instead of playing baseball, he has to hang out on a farm! After being dared to go into a grain silo, Connor finds a family of barn owls in trouble. Will Connor and his cousins be able to help these birds before it's too late?

As countries in Europe grew their military power in 1914, so did their fear of being attacked. Alliances were made and tested! Europe was split into two central powers—this was the birth of World War I. When America entered the Great War, they used carrier pigeons to send messages to their allies. Discover how one pigeon, Cher Ami, became famous for his mission to headquarters.

Commander William R. Anderson of the United States Navy thought the Nautilus, the Navy’s first nuclear-powered submarine, would be the first to reach the North Pole! Will Commander R. Anderson and the Nautilus accomplish this chilly feat, or will this be the ultimate lesson for him and his crew to learn?

Who is the first to show up to a forest fire? It's not firefighters—it's the Charcoal beetles! Looking for a place to lay their eggs, they search for the hottest parts of the fire in order to use the burnt trees. Learn how these beetles can sense fires and why fires are their ideal breeding grounds. Find out why scientists want to study these unusual bugs in order to help society!

Thor’s hammer was stolen by the Frost King! Without it, he is unable to defend Asgard. In order to get it back, Thor must give Freya the Lovely to the Frost King to be his bride. Unwilling to marry a giant, Freya comes up with a plan to steal back the hammer—have Thor dress up in disguise! Will Thor be able to get his hammer back?

Jeff is afraid of the dark and the monsters that might be hiding in it. When he hears a strange noise under his bed one night, he worries that his fears are coming true! What will Jeff do? What would you do if you found a monster under YOUR bed?

Seth loves to walk through the woods by his home. When he comes across a lone wolf one day, he must make a tough decision—allow the animal to remain free in the wild or call animal control to trap it and take it away. How will Seth decide? Either way, can he feel good about his choice?

Paddy Ahern travels through rural Ireland to find work. Despite being a hard worker, farmers will not hire him because they think he is boring. One night Paddy discovers a strange house and is taken by kidnappers! Will he survive to tell his story?

Alekos wants to be a mighty Greek soldier like Achilles! Despite being too small to fight, he stows away on a military ship. When an opportunity to ask his hero how to learn bravery and be a fierce warrior arises, will he be brave enough to take it?

When a young boy’s hunger gets the best of him, he must conquer the Hungry Monster before he eats all the food in the cafeteria! Will the boy be able to get his monstrous hunger under control before he eats his best friend, too?

Do you know how the first pizza was made? Learn how ancient civilizations started to make the first pizza—baked flat bread! See how pizza ingredients like cheese and tomatoes were discovered throughout history. Find out how pizza has become a worldwide favorite food.

Jeff is sick of the monster that hides in his room at night. To get rid of the monster, he comes up with a plan—he is going to scare him away! Will Jeff be able to trick the monster into leaving? Why is the monster in his room in the first place?

Do you know why monsters always glow in your favorite science fiction stories? Well, real-life science and physics can explain why this happens! Learn how radiation, atoms, and the sonic boom interact with one another to create this mysterious blue glow named, Cerenkov radiation, by particle physicists. Science fiction can sometimes become reality!

Can you name a real spy from history? Meet Julius and Ethel Rosenberg, who were communist spies for the Soviet Union during the Cold War. Learn about their work on the Manhattan Project to build an atomic bomb for the US, and their eventual trial for espionage. Do you think these historical spies were guilty for sharing secrets with the Soviets?