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The Lemhi Valley is a sagebrush steppe in Eastern Idaho, along the border with Montana. It is a critical habitat for the pygmy rabbit, and University of Idaho mammalian ecologist Janet Rachlow is gathering data to create maps showing where and when the rabbits spend their time. What they learn about the links between habitat features and habitat use could help inform future decisions involving land management and restoration for these types of environments. Part of the “Science Nation” series.
(Source: DCMP)
Hummingbirds live only in the Americas, and their diversity numbers 350 species. They are part-time carnivores that must catch animals that compromise ¼ of their diet. Demonstrates how they can hover, fly backward, and move their wings in figure eights at 200 wind-beats per second in slow and stop motion images. Also reveals that every night their bodies go in torpor (mini-hibernation) so they don't starve while they can't consume nectar. Also sees how they co-evolve with flowers through pollinating mutualisms, and acquired their aerial skills by evolving from ancestors of swifts, their nearest relatives.
Human babies drink milk; it's the food especially provided for them by their mothers. Various cultures have also added the milk of other mammals to their diet, and adults think nothing of downing a glass of cows' milk. But worldwide, only a third of adults can actually digest lactose, the sugar in milk. Human geneticist Spencer Wells tracks down the genetic changes associated with the ability to digest lactose as adults. Combining genetics, chemistry, and anthropology, this story provides a compelling example of the co-evolution of human genes and human culture.
One-third of Costa Rica's land is designated as national parks. One park is home to the capuchin, howler, and spider monkeys, each an endangered species. The three groups have distinct similarities and differences in their habitats, diets, characteristics, and social structures. As scientists study the roles and functions of the female monkeys, they remain fascinated by these animals that are so similar to humans. NOTE: One brief mating scene.
People say insects are the food of the future. They’re more environmentally sustainable and more humane than other sources of animal protein. Can eating insects really catch on in Western diets? In this episode, host Joe Hanson tries a variety of foods made from insects and along the way learns that eating bugs isn’t really that new for humans. Part of the "It's Okay to Be Smart" series.
Offers commonsense tips and step-by-step demonstrations on dog care as an alternative to high veterinary bills. Highlights include: toenail maintenance; treating infections and cuts; eye, teeth, and ear care; dry and itchy skin; and dietary considerations. NOTE: Demonstrates how to empty anal glands.
This program provides an overview of the different types of foods. It also gives guidance on healthy eating. Students learn the difference between refined grain and whole grain. They also discuss the benefits of eating fruits and vegetables, how the body turns proteins into amino acids to build muscle and tissue, and the need to avoid processed foods. Part of the "Human Nutrition" series.
Students receive a crash course in the physiology and functioning of their hearts as well as how to keep their hearts healthy. Animations clarify how the heart works to provide oxygen and nutrients to all the tissues and organs of the body. They also detail what can go wrong. The program stresses that even teenagers can show early signs of atherosclerosis and other heart problems. Two cardiologists and a dietitian then pinpoint the main risk factors for an unhealthy heart, including: smoking, abnormal levels of cholesterol, high blood pressure, obesity, diabetes, and physical inactivity.
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Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
