Plants

Wildfire: Trees | Science Trek

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Trees are the oldest, tallest and heaviest things on Earth. How do they grow and survive?  Why are they essential to life on our planet?  And what happens after a wildfire?

Plants Get Sick

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If conditions are right a plant can get sick just like people. This video describes the steps used to determine what can cause plants to get sick, and profiles four main types of pathogens that affect plants: fungi, bacteria, viruses and nematodes. The cause of a plant’s illness can be based on the environmental conditions and various pathogens that might be present. A pathogen is a type of organism that can cause a disease. It is up to a Plant Diagnostician to determine the cause of a plant’s illness.

Earth Day: A View from Above | STEM in 30

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The people of Earth didn't see a photo of our planet until the late 1960s. Photos of Earth changed the way we think about our planet. In this webcast we look at the beginnings of Earth Day and how a better understanding of our place in the universe has evolved through photographic scientific discoveries. Visit the full archived lesson with pictures and audience comments here.

Originally presented on April 22, 2015 | Explore the Support Materials below for the archived live-stream content with questions, comments, and images shared during the live event.

Pearl and Hermes Atoll

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This video segment adapted from the NOW-RAMP 2002 Expedition follows a team of U.S. Fish and Wildlife researchers as they visit the northwest tip of the Hawaiian Islands to document wildlife populations and help control invasive species. The Pearl and Hermes Atoll, one of the oldest landmasses in the Hawaiian Island chain, supports an impressive diversity of plants and animals but, like many islands, is vulnerable to invasive species.

How to Make a Composter | Full-Time Kid

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Turn any plastic bottle into your own DIY composter! Compost is a great way to think sustainably in your kitchen and turn food waste into nutrient-rich soil for your garden.

NOVA | The Reproductive Role of Flowers

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This video segment adapted from NOVA explains how flowers play a central role in the reproductive cycle of plants. Their striking array of colors, patterns, fragrances, and nectar all require lots of energy to produce. But it is these features that attract insects and other animals, which, in turn, carry genetic material from flower to flower. The video and illustration describe various parts of the reproductive system, including the stamens and pistil, which generate seeds and ensure the survival of an enormous variety of plant species.

Forecasting Suitable Habitat for Redwoods | Clue Into Climate

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With this video slideshow and accompanying lessons from Clue into Climate, produced by KQED, students learn that plants and animals must be able to adapt or move in order to survive significant environmental changes. Students also investigate how climate models are used to predict how species distributions may change as the planet warms.

Do Plants Think? | It's Okay to Be Smart

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For the last 50 years we've wondered whether plants can think... Haven't we?

How Plants Defend Themselves

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In this video segment from Nature: "What Plants Talk About," ecologist Ian Baldwin explains the many different and highly sophisticated ways in which plants, like wild tobacco, have adapted to identify and defend themselves from predators in hostile and often unfamiliar environments.

History's Most Powerful Plants | Eons

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Fossil fuels are made from the remains of extinct organisms that have been exposed to millions of years of heat and pressure. But in the case of coal, these organisms consisted largely of some downright bizarre plants that once covered the Earth, from Colorado to China.

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