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Part of the "Branches on the Tree of Life" series. Begins with a series of observations on Hydra, including habitat, structure, feeding, nematocyst discharge, locomotion (by looping), and its sexual and asexual reproductive strategies. Obelia illustrates the two-stage life cycle found in many cnidarians. Examining the biology of jellyfish (class Scyphozoa), sea anemones, and corals (class Anthozoa) rounds out the overview of phylum Cnidaria.
(Source: DCMP)
For centuries, man has searched for the fountain of youth hoping to find the answer to immortality. Well, it appears one creature has the answer. Scientists have discovered that a hydrozoan named Turritopsis nutricula is biologically immortal, and the key is in its life cycle. Part of the "News of the Day" series.
Explores the world of butterflies and bees. Segment 1, The Lives of Butterflies and Moths. Describes the four stages of the life cycle of the butterfly and moth: egg, larva (caterpillar), pupa, and adult butterfly or moth. Shows how their diet and defense systems are necessary for survival. Segment 2, Bees and Plants. Explains pollination and why plants depend on bees for survival. Suggested classroom activities follow each segment.
Part of the "Life in Aquatic Environments" series. Shows the variety of body forms and structures found in an environment ripped by waves. Examines structural, chemical, and behavioral adaptations that protect animals in this crowded environment. Looks at adaptations used to harvest the abundant food sources of the shore. Provides an overview of asexual and sexual strategies and the importance of larval development in the plankton. Reveals complex webs of life living in these accessible habitats.
Using crisp images and lifelike animations, this program introduces students to the intriguing realm of stars and galaxies. The main characteristics of galaxies and stars are discussed. Special attention is given to the features of stars, including size, temperature, and brightness. The life cycle of a star is also highlighted, as are the tools used by astronomers to study space. Additional concepts and terminology illustrated in the video include: universe, telescope, satellites, constellations, star color, spectrum, gas, light-year, and black hole.
Examines developments in zoology and agriculture that are challenging scientists, business leaders, and government officials alike. With commentary from Lori Williams of the National Invasive Species Council, it studies a disturbing increase in nonnative and often harmful insect populations on American soil. North Carolina's sprawling hog farms and their growing waste-disposal problem are also investigated, with input from farmers, their neighbors, and EPA officials. Also offers insights into the 17-year cicada life cycle-featuring an interview with renowned entomologist and University of Maryland professor Mike Raupp.
Already parts of the world suffer from lack of water, and with increasing demand it's expected to get worse. To better understand and predict drought, thirty universities are collaborating in a multidisciplinary effort called the Shale Hills Project. Among the studies, is field research following the life cycle of water along the Susquehanna River Basin. With support from the National Science Foundation, civil engineer Chris Duffy and his team at Penn State are tracking several aspects of rainfall to better understand the relationship between the flow of water, drought prone areas, and urban populations.
Gravity rules the life cycle of stars. During the Red Giant dying stage in the life of an average size star, its outer layers are blown off in vast clouds of dust and gas called "nebulae" that contain hydrogen, oxygen, and nitrogen. Gravity crushes the remaining atoms into a remnant core called a white dwarf. The gravity of giant stars-10 to 20 times larger than average-will, at the end of their life in a supernova explosion, crush together even mutually repulsive protons and electrons, leaving a remnant rotating core of neutrons (i.e., a pulsar). Also explains how stars 20 to 100 times average size collapse into a core so dense that its gravity doesn't even allow light to escape (i.e., a black hole).
Gabriela, Manuel and Leonardo are three friends who accidentally start a rocket that takes them to space. Their journey through space takes them to different planets and strange worlds. Throughout their journey, they have the help of Maqui, an on-board computer. Maqui helps them learn about the universe. The kids arrive at a planet where only two elderly people are left. The rest of the population left because their sun is dying. Maqui explains to them that the sun is a star, and she teaches the life cycle of stars. The kids rescue the elderly pair and reunite them with the rest of their planet’s inhabitants. During this adventure, they learn the difference between planets and stars.
The photographers and explorers capture one of nature's most amazing life cycles as a bristly caterpillar transforms into a beautiful butterfly thanks to some inter-species ingenuity. Segment of video from Wild Chronicles Series.
Millions of monarch butterflies from the United States and Canada fly five thousand kilometers each year to hibernate in the forests of California and Mexico. This documentary explains their diet, as well as their protection against their predators, their migratory routes, the dangers they face due to deforestation, the effects of the ecotourism, and much more. Close-ups accompany descriptions of the metamorphosis and the life cycles of these curious insects. NOTE: Brief copulation scene.
Features different systems of measurement and their value to science in five separate segments. Stardust Elements: Looks at the life cycles of stars and explains how the death of a star seeds the universe with all the elements of the periodic table. End of Dinosaurs: Debates several scientific theories about why and how dinosaurs became extinct. Earthly Thermometers: Demonstrates how the Fahrenheit, Celsius, and Kelvin scales measure the same thing in different ways and why we need precise measurements of temperature. Frozen in Time: Pieces together the past of a 5,300-year-old man whose body was preserved in ice in the Italian Alps. Hurricanes Take the Heat: Follows researchers who study how hurricanes form and try to predict where the next one will strike.
Parakeet talks about how sad and difficult it is when friends leave. The llama explains she is worried because the jaguar prefers to starve to death than to cross the river and search for food. The jaguar explains his fear: his brother drowned while crossing the river. Amanda feels the world is collapsing on her, she thought only the old died. The fleas show their documentary on death, the cycle of life, and the importance of mourning when someone you know dies. Talks about Celia Cruz's death, the grief her husband, friends, and fans experienced, and how she lives on through her work and music.
Part of the "Life in Aquatic Environments" series. Places many of the organisms into an ecological perspective of hydras, planarians, annelids, aquatic insects, rotifers, protists, and all other organisms that provide food for fish and other vertebrates. Observes adaptations for planktonic life in daphnia and other cladocerans, copepods, rotifers, and planktonic algae. Explores bacterial decomposition, recycling of materials, adaptations for bottom life, and ecological relationships in the bottom community. Takes an underwater look at the highly specialized organisms that live in rapids, under rock communities, and in slower waters. Investigates adaptations for life in temporary wetland environments.
Earth has many systems and cycles that help regulate the processes needed to sustain life. These systems are susceptible to human impact. Part of the "Earth Science" series.
Our middle-aged sun has fascinated people throughout history, but only since the rocket age have scientists been able to document its life and the forces that sustain it. Explores sunspots, solar cycles, the birth of a solar storm, and the use of specialized spacecraft outside earth's ionosphere.
Presents the principles of atmospheric dynamics. The Earth's atmosphere is a balance of gases and sunlight that allows for the possibility of life. It has a composition, structure, and life sustaining biological, geological, and chemical cycles in its lower reaches. Also, discusses how these atmospheric elements are being impacted by the unprecedented burning of fossil fuels.
This program from the acclaimed PBS Nature series, "Forces of the Wild," focuses on the seasonal cycle of nature, beginning with spring's return of life to the planet. Uses natural history footage, computer animation, and time-lapse sequences to explain universal concepts. Narrated by James Earl Jones.
Introduces students to our planet Earth and its place in the solar system. Explains that Earth's unique position makes it conducive to life. Also explains the basics of earth science, including the water cycle, weather, and continents. Short review.
What causes earth's weather? Explains that the sun is the primary source of our changing weather phenomena as it warms the atmosphere and water. Covers weather forecasting, high and low pressure fronts, cloud formations, and the water cycle. Presents weather conditions for thunderstorms, tornadoes, and hurricanes.
Showing collections 1 to 6 of 6
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
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
Resources related to vision
A collection containing 12 resources, curated by Charles LaPierre
3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
Collection of anatomy resources
A collection containing 21 resources, curated by Benetech
