A fresh and accessible approach to an important scientific concept.
The evolution of iguanas in the Galápagos provides a striking example of the workings of natural selection.
This entry in the How Nature Works series explains how scientists have determined that two surprisingly different species evolved from a single ancestor. Collard’s smoothly written text introduces two kinds of iguanas now living on these islands: a prickly pear–eating land iguana and a marine iguana that feeds on green algae underwater. He goes on to describe the volcanic origin of the archipelago and how plants and animals arrived. Drawing on well-grounded scientific conjecture (described in one of six informative sidebars), he then imagines the arrival of the first ctenosaur from Central America 8.25 million years ago and, after 3.75 million more years, the evolution of its algae-eating descendent. He introduces the theory of natural selection and, in another sidebar, explains how genes and their alleles contribute to individual differences. Returning to the continuing evolution of these two species, he shows how each has become perfectly adapted to its habitat. Finally he touches on other unique Galápagos inhabitants and the development of the theory of natural selection. A helpful map locates the Galápagos; images of its reptiles, birds, sea lions, and scenery will help readers picture the setting today. The attractive design makes good use of these well-reproduced photographs, some taken by the author.
A fresh and accessible approach to an important scientific concept. (glossary, suggestions for further research, author’s note) (Nonfiction. 9-13)Pub Date: Dec. 4, 2018
ISBN: 978-0-88448-649-7
Page Count: 48
Publisher: Tilbury House
Review Posted Online: Oct. 27, 2018
Kirkus Reviews Issue: Nov. 15, 2018
Finally, an astro-memoir for kids that really gets down to the nitty-gritty.
A former space shuttle pilot and International Space Station commander recalls in unusually exacting detail what it’s like to be an astronaut.
In the same vein as his more expansive adult title How To Astronaut (2020), Virts describes and reflects on his experiences with frank and photographic precision—from riding the infamous “Vomit Comet” to what astronauts wear, eat, and get paid. He also writes vividly about what Earth looks like from near orbit: the different colors of deserts, for instance, and storms that “are so powerful that the flashes from the lightning illuminate the inside of the space station.” With an eye to younger audiences with stars in their eyes, he describes space programs of the past and near future in clear, simple language and embeds pep talks about the importance of getting a good education and ignoring nay-sayers. For readers eager to start their training early, he also tucks in the occasional preparatory “Astronaut Activity,” such as taking some (unused) household item apart…and then putting it back together. Lozano supplements the small color photos of our planet from space and astronauts at work with helpful labeled images, including two types of spacesuits and a space shuttle, as well as cartoon spot art depicting diverse figures.
Finally, an astro-memoir for kids that really gets down to the nitty-gritty. (glossary, index) (Nonfiction. 9-11)Pub Date: April 11, 2023
ISBN: 9781523514564
Page Count: 176
Publisher: Workman
Review Posted Online: Jan. 24, 2023
Kirkus Reviews Issue: Feb. 15, 2023
PERSPECTIVES
“In 1875 there were perhaps fifty million of them. Just twenty-five years later nearly every one of them was gone.” The author of many nonfiction books for young people (Bridges; Truck; Giants of the Highways, etc.) tells the story of the American bison, from prehistory, when Bison latifrons walked North America along with the dinosaurs, to the recent past when the Sioux and other plains Indians hunted the familiar bison. Robbins uses historic photographs, etchings, and paintings to show their sad history. To the Native Americans of the plains, the buffalo was central to their way of life. Arriving Europeans, however, hunted for sport, slaughtering thousands for their hides, or to clear the land for the railroad, or farmers. One telling photo shows a man atop a mountain of buffalo skulls. At the very last moment, enough individuals “came to their senses,” and worked to protect the remaining few. Thanks to their efforts, this animal is no longer endangered, but the author sounds a somber note as he concludes: “the millions are gone, and they will never come back.” A familiar story, well-told, and enhanced by the many well-chosen period photographs. (photo credits) (Nonfiction. 10-12)
Pub Date: Feb. 1, 2001
ISBN: 0-689-83025-4
Page Count: 32
Publisher: Atheneum
Review Posted Online: June 24, 2010
Kirkus Reviews Issue: Dec. 1, 2000
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