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Looks at how the male and female bodies are prepared for their task of continuing the human race. Shows the characteristics of sperm and ova and how each contains a partial blueprint for the future offspring. The mechanism of cell division is shown through exceptional microphotography, and the mechanisms of heredity are carefully described. NOTE: Shows some nudity.
(Source: DCMP)
In each episode, viewers are given clues about a hidden animal inside a magic box. Can viewers use all the clues to correctly guess the name of this stinging arachnid that carries its tail curved over its back? Part of the "Zoobabu" series.
Discussions related to sex education and prevention strategies may not be appropriate for this age group, so this simply provides a baseline of knowledge about HIV and AIDS. Covers the definition of HIV and AIDS, transmission, progression, treatment and the importance of treating HIV-positive people with respect and compassion. Presents information through a lens that emphasizes healthy decision-making.
In each episode, viewers are given clues about a hidden animal inside a magic box. Can viewers use all the clues to correctly guess that the mystery animal in this episode is a duck? Part of the "Zoobabu" series.
In this program, viewers will travel the world and learn about the diversity of plants throughout the various land regions around the world. Graphics, animation, and live-action footage will assist students in identifying characteristics of various habitats on Earth. Students will learn how plants have adapted to live in polar regions, tundra, desert, grasslands, forests, and salt and freshwater habitats. Part of the "Way Cool Science" series.
The body is like a self-supporting hospital, able to deal with its own with wounds, bacterial invasions, fractures, and obstructions to its various passages. Follows the sequence of events over seconds and weeks when skin or bone is damaged, and shows the defensive reactions of blood clotting, fever, and mending of bone fractures.
The evolution of the uses of corn coincides with some significant historical events. Throughout history, it has been a staple in the human diet, but in the 1950’s, it became the main ingredient in the meat industry. Farmers used corn to shrink the growth periods of cattle to meet the demand of the consumer. Corn syrup was born from the Cuban Embargo. Today, genetically engineered corn is seen in nonfood products.
African penguins are critically endangered. Their colonies have been reduced by 70 percent in the last decade. Commercial fishing is a great factor in the penguins' population decline as the world's oceans are being overfished. With penguin chicks’ growth and health in crisis, a hands-on rescue strategy could sustain struggling colonies while conservationists work to ensure the species’ survival.
Corals are important ecosystem engineers, providing habitat and nutrient recycling to tropical reefs. However, coral species’ richness and abundance are in decline worldwide, due in large part to the impacts from global industrialization and human population growth. Coral disease is a major contributor to this decline of tropical reefs, and therefore, investigations into the causes of and remedies to these diseases are of critical importance. Part of the National Science Foundation Series “Science Nation.”
Snakes certainly make it look easy when they slither forward, leaving perfect S-curve tracks behind them, but scientists have long been puzzled by the mechanics of their locomotion. Now, after a series of experiments and some computer modeling, David Hu has cracked the case. With funding from the National Science Foundation, he’s using math to determine how snakes slither and it turns out they move in a much different way than scientists have long thought.
Home to 25% of all marine species, coral reefs protect the coastlines of more than 100 countries and provide 500 million people with jobs. However, reefs are experiencing damage due to climate change, ocean acidification, and other pressures. Mote Tropical Research Lab and the Coral Restoration Foundation, both in the Florida Keys, are performing groundbreaking work by accelerating coral growth in the lab, creating nurseries in the ocean, and replanting on damaged reefs. Their efforts create hope for the future of sustainable coral reefs around the globe.
To change a spacecraft's speed and direction, NASA engineers use a planet's or moon's gravity, a process called a "gravity assist." In this video, students design and build systems that use magnets to control the speed and direction of a rolling ball. As they build their systems, they use the engineering design process, apply a variety of science concepts, and learn how NASA spacecraft use gravity to help them explore the solar system. Part of the "Design Squad Nation" series.
At first, the back room of plant physiologist Edgar Spalding's lab at the University of Wisconsin-Madison might be mistaken for an alien space ship set straight out of a Hollywood movie. It's a room bathed in low-red light with camera lenses pointing at strange looking entities encased in Petri dishes. A closer inspection reveals the Petri dishes contain nothing alien at all, but rather very down-to-earth corn seedlings. They're grown in red light for optimal growth. They're just one of the plants featured in thousands of time-lapse movies Spalding has created over the past five years. The goal is to figure out how to grow crops optimally.
Explores the need for many multicellular plants to have specialized internal transport systems, which are systems that can efficiently distribute materials from soil and leaves to the parts of the plants where they are needed. An overview of how plants obtain their nutrients is provided. The structure and function of root hairs is explored, explaining their remarkable ability to facilitate an enormous uptake of water and dissolved minerals for the plant. Following this, the separate transport systems of the xylem and phloem are explored in detail. Also explains the mechanisms by which vascular plants transport water and minerals upward from the roots as well as sugars from leaves and other sugar sources throughout the plant for storage or for growth and repair.
The Mexican free-tailed bat is one of the most abundant mammals in North America. Outside of San Antonio, Texas there is a cave that is home to over 40 million of these bats. Roosting in large numbers in relatively few areas makes them especially vulnerable to human disturbance and habitat destruction. Documented declines at some roosts are cause for concern because there is a delicate balance in the ecosystem that depends on the bats. There is also cause for concern among other bat species that are falling victim to white nose syndrome, which is a condition named for a distinctive fungal growth around the muzzles and on the wings of affected animals.
Rice covers most of Asia's best agricultural land and uses vast quantities of water, two vital resources that are increasingly in short supply. With the number of people in the world rising exponentially, rice farmers will have to cultivate and harvest rice with less labor, land, and time than they have in the past. Reviews how science and technology are solving this supply-and-demand problem.
Find out how Albert Einstein used the totality phase of the 1919 solar eclipse to prove his theory of relativity, which predicts that large objects bend “space-time” towards themselves.
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.
Why do some birds, like raptors, move from one region to another at certain times of the year? It is all about their interactions with the environment. The primary factor is scarcity in a food source. Another factor includes changes in the weather. This episode explains the seasonal events that affect the raptor’s migration and provides a platform to investigate the types of relationships found in their ecosystem. Part of the "Seasonal Science" series.
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, having managed to get away from the iceberg, Moko and Alarick are moored in the peaceful bay and they decide to fish. They disembark and go off to find branches to make fishing lines. But when they return, the water level has gone down and their boat is beached and the sea is far in the distance. Confused, they go in search of a river, but everything is frozen! Tired and hungry, they return to their boat, which is again floating atop the waves. The sea has returned! Cautious of the rising and falling tide, they take their boat further out to sea and finally throw their lines and catch some fish, convinced that the sea simply wanted to take them to this spot where the fishing would be better.
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Biology related concepts
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