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Kelp forests can be seen along much of the West Coast of North America. NOAA scientists study kelp forests by visiting the same locations over and over to assess the presence and abundance of a variety of organisms. Monitoring allows marine scientists to determine if the kelp forest is changing over time and to identify the cause of those changes, whether natural or human. Healthy kelp forests maintain the existence of thousands of plants, animals, and fish stocks. All of these require a thriving ocean ecosystem.
(Source: DCMP)
Provides an overview of all the stages to ensure a kitten grows up to become a happy, healthy, and much-loved addition to a family. Cats have an extra sense organ, and they can actually "taste" smell. In relation to their body size, cats have the largest eyes of any mammal. The cat's grace and beauty have inspired artists since ancient times. By Victorian times they became pampered pets. Cats are loving and affectionate but have an independent character that guarantees them a special place in the hearts of their caregivers. NOTE: Bonus material follows main feature.
Explores the open savannahs of Africa, particularly the mammals that inhabit them and the trees that border the grasslands. Shows how the different animals interact with each other and the non-living elements of their habitat to maintain a healthy balance. Also investigates the threat from an increasing human population for homes, food, other resources, and the resultant threat to the survival of many animal groups. Looks at international breeding programs around the world, which were established to protect these animals and enable them to reproduce in captivity, so their gene pool is preserved.
Elizabeth Hadly has been studying biodiversity in Yellowstone National Park for 30 years. Accompanied by biologist Sean Carroll, she demonstrates different ways in which climate change is impacting the park’s ecosystems. Bark beetles are surviving the winter at higher elevations and killing a large number of white-bark pine trees, disrupting the food web that includes squirrels and grizzly bears. Climate change is also causing ponds to dry up, reducing the pond habitat and decimating the local amphibian population. Although the park provides protected environments for animals, it is not immune from global threats like climate change.
Puppies are a joy to behold, but with that joy comes responsibility. Regardless of what kind of puppy one has, the same general rules apply when caring for a pet. Like people, all puppies have different personalities, and no two are exactly the same. For this reason, owners of new puppies or dogs will have to take time to get to know them, to build trust, and to discover what actually motivates them. Experts explain all the necessary steps to ensure that a puppy grows up to become a healthy, well-behaved, and much-loved addition to a family. NOTE: Bonus material follows main feature.
Scholar Johan Norberg travels to New Zealand to find out how the Quota Management System has helped save fish populations. Thirty years ago, New Zealand fisheries were on the brink of disaster due to overfishing. Today, commercial fishing off New Zealand provides fish for consumers worldwide, an excellent livelihood for fishers, and a stronger, healthier ocean and fish population.
A quick glance at the marsh next to Saquatucket Harbor in Harwich Port, Massachusetts, reveals right away that some of the grass is missing. The cordgrass there, and all around Cape Cod, has been slowly disappearing for decades. Marine ecologist Mark Bertness of Brown University studies this critical ecosystem, which protects our coastal environment by nurturing a complex web of plants and animals, filtering nutrients, and serving as a critical storm barrier. Bertness says the marshes are being overrun by purple marsh crabs because their main predators, blue crab and finfish, are being overfished. So, the purple marsh crabs are free to gorge on healthy fields of cordgrass and once done feeding, they leave behind nothing but lumpy fields of mud.
Dr. Randall Hughes is examining diversity within the marsh. She discusses the diversity of the foundation species of a marsh: smooth cordgrass (Spartina alterniflora). Does having a greater diversity of genetically distinct plants make for a healthier marsh? Part of the series "In The Grass, On The Reef."
Anna was born with a sweet tooth, and as a young woman, she created a successful business using it. Her delicious jams and jellies gave pleasure to many, but did they also cause harm? Explores the way the human body processes food and how its long-term growth and development are shaped by eating habits. Illustrating cellular aging and its relationship to AGEs, or advanced glycation end products, a connection is drawn between the bacteria an infant must consume to build a healthy immune system and the bacteria that consume the body at death. As Anna's life draws to a close, viewers will understand that "dust to dust" is a cycle in which humans take an active part--every time they sit down to a meal.
The scientific team visits the Chagos Archipelago, a tropical paradise with some of the healthiest coral reefs on the planet. They want to study reefs seemingly untouched by man but instead become witnesses to a bleaching incident that transforms the reefs right before their eyes. Part of the "Global Reef Expedition" series.
Discusses some of the biggest problems facing the environment today and how it is being abused. Provides an overview of the role of the greenhouse effect, carbon emissions, air pollution, and how the burning of the rainforest affects global warming. Explains the "carbon footprint" and outlines an experiment with acid rain. Shows how much water and unnecessary packaging material people use every day. Details how people can "refuse, reuse, and recycle," contributing to a healthier Earth.
Showing collections 1 to 3 of 3
Biology related concepts
A collection containing 59 resources, curated by Benetech
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
Resources related to vision
A collection containing 12 resources, curated by Charles LaPierre
