It was December 24, 1801, when bundled-up Philadelphians bought their 25¢ tickets and entered Peale’s Museum on Fifth Street. Once inside, they saw the owner’s paintings. And I’ll bet you have too—even if you’ve never heard of Charles Willson Peale. This one, for instance, of his fellow Revolutionary War soldier:
Visitors to the museum had seen Peale’s collections of butterflies, too, and other nature specimens, such as the fossilized teeth of mysterious beasts. (Who knew then that animals went extinct? Hardly anybody!) But on this extra-special Christmas Eve, people probably hurried past Peale’s handmade dioramas, with the lifelike bodies of birds and mammals that he’d stuffed and posed. Today, Mr. C.W. Peale himself was introducing his NEW ATTRACTION. People had paid an extra 50¢ just to see it! Now they looked up, up, UP at it, and were astonished.
What animal’s skeleton was eleven feet tall? Seventeen and a half feet from its bony tail to the tips of its giant, curving tusks? It was a mastodon.
No one had seen a live mastodon in more than ten thousand years. So how did one’s bones get to Philadelphia? Mr. Peale and other naturalists such as Thomas Jefferson, the new President-elect, wrote to one another about their studies, collections, and the latest discoveries, such as like these huge, mysterious bones in southern New York state. Some of North America’s long-gone mastodons ended up there, by the Hudson River. As soon as he heard about them, Peale hurried to see them. Then he not only figured a way to dig up the bones, but he also painted a picture of the huge excavation!
Peale’s son, Rembrandt helped to draw and assemble the bones:
For years, people paid to marvel at the enormous, sensational skeleton. Later on, after Mr. Peale’s death in 1827, his museum slowly went broke. P.T. Barnum, the circus showman, bought a lot of his exhibits. Later still, they were destroyed in a fire. And the mighty bones of the mastodon wound up lost for a hundred years, until the skeleton turned up in Germany, where you can see it today.
In Thomas Jefferson, her sixth presidential biography for National Geographic, Cheryl Harness illuminates the many sides of Thomas Jefferson: scientist, lawyer, farmer, architect, diplomat, inventor, musician, philosopher, author of the Declaration of Independence, founder of the University of Virginia, and third president of the United States. Readers meet this extraordinary man of contradictions: a genius who proclaimed that "All men are created equal" and championed the rights of "Life, Liberty, and the Pursuit of Happiness," while at the same time living a life that depended on the enforced labor of slaves.
MLA 8 Citation
Harness, Cheryl. "The Big Deal in Mr. Peale's Museum." Nonfiction Minute, iNK
Think Tank, 18 Apr. 2018, www.nonfictionminute.org/the-nonfiction-minute/
Have you ever seen a lizard hurtling over your head? How about a frog sailing down from the tree tops? I’m not making these animals up. They belong to one of earth’s most astonishing groups of animals.
Gliders travel through the air, but they don’t fly. Instead, they glide. What’s the difference? Well, to get itself off the ground, a bird, bat, or insect has to generate a force called lift. A flying animal generates lift using its wings, which are attached to powerful flight muscles. These wings move and bend in complicated motions to counteract the force of gravity.
Gliding animals do not have muscle-powered wings. Instead, most gliding animals have special flaps or folds of skin called patagia. Like wings, the patagia generate lift—but only after the animal is already moving through the air.
When chased by a snake, a Draco lizard leaps from its tree. Instead of plunging to its death, it spreads out its rib cage into two elegant airfoils covered with skin. As air rushes over them, these airfoils—the patagia—generate lift to keep the lizard from falling straight down. The lizard does steadily descend toward earth, but it is also riding the air. It can change directions, pull a U-turn, and control where it wants to go. In the process it can travel hundreds of feet before landing on another tree or on the ground.
The patagia of Wallace’s frogs lie between their toes. These frogs usually live up in the trees, but when it is time to mate or lay eggs, they leap, spread out their toes, and glide to earth.
Earth’s most astonishing gliders may be five species of gliding snakes. These snakes don’t have patagia. Instead, they flatten out their bodies and “crawl” through the air. Scientists aren’t sure if the crawling motion helps generate lift, or if lift comes mainly from a snake’s flattened shape, but the animals can glide more than 100 feet before landing.
Most of earth’s gliding animals live in Southeast Asian rainforests, which are home to more than eighty species of gliding lizards, frogs, snakes, and mammals. In North America, we have only two gliding animals: Northern and Southern flying squirrels. Despite their name, flying squirrels don’t fly. They glide—and are adorably cute! Want to see one? Try shining a flashlight on a bird feeder at night!
A male Draco lizard extending his gular flag (throat flap) and patagi (wings). While not capable of powered flight Dracos often obtain lift in the course of their gliding flights. Glides as long as 200 feet have been recorded, Wikimedia
Wallace's frogs live almost exclusively in the trees, and leap and "fly" from tree to tree or to bushes. The membranes between their toes and loose skin flaps on their sides catch the air as they fall, helping them to glide, sometimes 50 feet or more, to a neighboring tree branch or even all the way to the ground. They also have oversized toe pads to help them land softly and stick to tree trunks. Wikimedia
Flying squirrels are able to glide from one tree to another with the aid of a patagium, a furry, parachute-like membrane that stretches from wrist to ankle. Their long tail provides stability in flight. Wikimedia
There are five recognized species of flying snake, found from western India to the Indonesian archipelago. They flatten out their bodies and parachute or glide using their ribs to become flat, and then they whip their bodies in a fast, rhythmic S-shape to stay airborne. Wikimedia
Illustrated with arresting photographs, Sneed B. Collard's Catching Air: Taking the Leap with Gliding Animals takes us around the world to learn why so many gliders live in Southeast Asia, and to find out why this gravity-defying ability has evolved in Draco lizards, snakes, and frogs as well as mammals. Why do gliders stop short of flying, how did bats make that final leap, and how did Homo sapiens bypass evolution to glide via wingsuits and hang gliders―or is that evolution in another guise?
MLA 8 Citation
Collard, Sneed B., III. "Meet Earth's Incredible Gliders." Nonfiction Minute,
iNK Think Tank, 11 Apr. 2018, www.nonfictionminute.org/
Dorothy Hinshaw Patent
Nature’s Animal Ambassador
Have you heard about the “butterfly effect,” the idea that one small change can bring about big changes over time? This idea is important in the study of ecology, which deals with the interactions of living things and their environments. Each element of an ecosystem has its place. When one element is eliminated, it affects everything else.
The Yellowstone ecosystem centered in Yellowstone National Park provides a great example. Late in the 20th century, biologists were worried about the aspen trees there. Aspens occur in clusters that are actually clones growing up from shared root systems. Some of the Yellowstone clones were hundreds of years old, but the old, dying trees weren’t being replaced by strong young shoots. It looked like they might just die out, and no one was sure why.
When a severe drought in 1988 led to big wildfires in the park, the idea that fire might stimulate aspen growth proved wrong. Perhaps the elimination of wolves from the region in the early 20th century was to blame. Wolves? New trees? How could that be? Without wolves, the behavior of the Yellowstone elk had changed. No predators. No worry. So the elk became lazy, acting like cows, lying around in shaded areas along the rivers and creeks, munching contentedly on the juicy fresh growth of the willows and aspens.
In 1995, after much political battling, wolves were reintroduced into Yellowstone. The wolf population grew and the elk learned to be on the alert. As the wolves’ favorite food, the elk had to change their behavior to survive—no more relaxing by a stream where wolves could easy sneak up and make a meal of them! They had to move around and spend more time in open places where watching for hungry wolves was far easier.
The wolves are changing the Yellowstone landscape in positive ways. The aspens and willows are coming back. Beavers, which had almost disappeared from some parts of the park, are returning. These rodents feed on aspens and willows and use them to build their dams and lodges. Beaver dams create ponds, and the ponds provide homes for hundreds of species of plants and animals, from algae and water striders to ducks and muskrats. The willows and aspen trees around the pond are nesting sites for songbirds and homes for insects and spiders, all thanks to the wolf.
Welcome back, wolves!
Dorothy Hinshaw Patent's book, When the Wolves Returned: Restoring Nature's Balance in Yellowstone, is an IRA/CBC Teachers' Choices book, an ALA Notable Children's Book, A Book Sense Pick, and an Outstanding Science Trade Book for Children, as well as receiving the Orbis Pictus Honor Book Award. Booklist calls it "A great choice for elementary units about science and environmental protection," and Kirkus gave it a starred review. Click here to read the reviews.
Dorothy Hinshaw Patent is a member of iNK's Authors on Call and is available for classroom programs through Field Trip Zoom, a terrific technology that requires only a computer, wifi, and a webcam. Click here to find out more.
MLA 8 Citation
Patent, Dorothy Hinshaw. "Everything Is Connected: The Butterfly Effect and the
Wolf." Nonfiction Minute, iNK Think Tank, 27 Mar. 2018,
Are you tougher than a tardigrade? I don’t think so.
These typically water-dwelling animals may be microscopic in size (barely half of a millimeter when fully grown!), but boy are they fierce. Sometimes called “water bears,” they’re anything but cuddly. Each of their eight legs is decked out with wicked claws. Some tardigrades have full body armor. Most have specialized "sucker" mouths to pierce the cells of plants and animals and suck out their nutrients, while others prefer to consume their tiny prey whole… and that prey might even be another tardigrade!
Aside from ending up as someone else’s dinner, though, tardigrades are practically indestructible. They can survive in just about any conditions and take on just about anything life has in store for them. Starvation? No worries there: Tardigrades can go without food for at least 10 years. What about water, you say? No problem. They’ll just suspend their life activities and wait until the drought is over. They can survive at pressures more than six times that of the deepest ocean trenches. And, you’d die from radiation poisoning long before a tardigrade would even notice. Scientists have even tried shooting them into outer space… and the tardigrades survived.
Because of their ability to live practically anywhere, these little guys are practically everywhere. Tardigrades can be found on top of Mount Everest and in boiling hot springs, in desert dunes and rainforest canopies, in freshwater lakes and salty oceans, on your roof, outside your front door… maybe even in your bed or on your dinner plate! There are billions and billions of tardigrades… and they’re always making more!
Fortunately, there’s no need to worry—tardigrades are completely harmless to humans. In fact, tardigrades may actually end up being our best friends someday. Because they can do so many things that other Earthly animals can’t, scientists are studying tardigrades to try to find solutions to all kinds of problems. Want to dry something out to preserve it, then rehydrate it later? Study how tardigrades do it. Wish we could safely reanimate something that has been frozen? Learn from the tardigrades. Need to protect cells from being damaged by radiation? Figure out why tardigrade cells can withstand it.
Who knows? Someday the tough tardigrades might teach us all kinds of handy tricks!
Tardigrades are short and plump, with four pairs of legs, each with four to eight claws also known as "disks." Schokraie E, Warnken U, Hotz-Wagenblatt A, Grohme MA, Hengherr S, et al. (2012)/Wikimedia Commons
An adult Milnesium tardigrade, an example of more than 1,000 species of the tiny animal. Bob Goldstein and Vicky Madden, UNC Chapel Hill/Wikimedia Common
This video shows a tardigrade in real time at 100X magnification. Dmitry Brant via Wikimedia Commons
Laurie Ann Thompson and coauthor Ammi-Joan Paquette begin a fascinating new series with Two Truths and a Lie, a book that presents some of the most crazy-but-true stories about the living world. Some of the stories are too crazy to be true—and readers are asked to separate facts from fakes! "A brief but savvy guide to responsible research methods adds further luster to this crowd pleaser.” —ALA Booklist (starred review)
MLA 8 Citation
Thompson, Laurie Ann. "Tardigrades Make the Grade." Nonfiction Minute, iNK Think
Tank, 21 Mar. 2018, www.nonfictionminute.org/the-nonfiction-minute/
“It is at these times you realize the blessing of a good, thick skirt,” said Mary Kingsley after she crashed into a cleverly concealed leopard pit lined with twelve-inch ivory spikes.
The year was 1895, the place Equatorial West Africa, and the spunky lady saved, thanks to her observance to the dress code of the day, was a young Englishwoman collecting species of fish and beetles for the British Museum.
Mary Kingsley was the daughter of a physician who spent most of his time traveling. Although she received no formal education (reserved for her brother Charles), Mary learned to read, becoming fascinated with subjects such as science, exploration and piracy.
At one point she was granted permission to teach herself German, but only after she could iron a shirt properly. Mary learned chemistry, experimented with gunpowder and electricity, and became engrossed by the intricacies of plumbing. After years of caring for her invalid mother, in 1892 both her parents died. With the small inheritance left to her came the fulfillment of a dream: to explore West Africa.
When Mary crashed into the leopard pit, she was traveling in what was then the French Congo, getting to know the Fangs, reportedly a tribe of cannibals. Traveling by canoe, she was once marooned in a crocodile-infested lagoon. When one tried to climb aboard, she was there with a paddle, ready to “fetch him a clip on the snout.”
After two trips, she wrote a book called Travels in West Africa. She became a sought-after lecturer and celebrity. In public appearances she was both funny and serious, peppering her narrative with jokes, often at her own expense, but also being critical of the way the British had steamrolled into the African continent, with little regard for its ancient cultures.
In 1900 she sailed to Africa for the third time, responding to an urgent call for nurses in South Africa, where war was underway. Assigned to a hospital where hundreds of soldiers were dying from a raging epidemic, she became ill herself, and died two months later. She was buried at sea with military honor.
In her book, she remembers: “Indeed, much as I have enjoyed life in Africa, I do not think I ever enjoyed it to the full as I did when dropping down the Rembwe… Ah me! Give me a West African river and a canoe for sheer pleasure.”
Rave reviews for Roxie Munro's book Market Maze:
"A great way to introduce kids to their foods' origins and to prepare them for a greenmarket visit of their own." Kirkus (Starred review!) excerpt.
"From a parent’s or teacher’s point of view, here’s a good way for kids to gain the visual discrimination skills needed for reading, while they learn about the sources of food at their local farmers’ markets. For kids, though, the combination of mazes and hidden objects is just plain fun. It’s a winning combination." Booklist review excerpt.
Roxie Munro is a member of iNK's Authors on Call so you can meet her face-to-race through interactive videoconferencing. Learn more about her programs here.
MLA 8 Citation
Munro, Roxie. "Mary Kingsley." Nonfiction Minute, iNK Think Tank, 15 Mar. 2018,
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that 30 People Who Changed the World has been selected for Notable Social Studies Trade Books for Young People 2018, a cooperative project of the National Council for the Social Studies (NCSS) & the Children’s Book Council