The Kemps Ridley Sea Turtle

This video adapted from Texas Parks and Wildlife Department describes how humans are helping restore safe nesting grounds for the critically endangered Kemp's ridley sea turtle to ensure its successful repopulation.

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Leonard P. Zakim Bunker Hill Bridge

In this Building Block video, see the Zakim Bridge, the widest cable bridge in the world, soar atop a clear blue Boston sky. This static wide shot captures both of the bridge's pillars.

Light Pollution

In this interactive activity adapted from the National Park Service, learn how light pollution affects the night sky, animals, and humans, and then explore several possible solutions.

Lincoln Memorial

In this Building Block video, tourists mill about the Lincoln Memorial and reflecting pool during a hazy day of summer.

Llamas

This Building Block video shows a medium shot of a group of llamas walking over dry grassland near the Andes Mountains.

London's Tower Bridge

This Building Block video from the Building Big series shows London's Tower Bridge framing the city skyline. Cars travel over the bridge while boats travel beneath it along the Thames River.

Maple Syrup

This video from WPSU’s series Outside shows how to identify a sugar maple tree by its branches, twigs, buds, and bark, and explains how to produce maple syrup.

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Mars Rover

This Building Block video features a 2004 animation of the Mars rover "Opportunity" approaching the rim of Endurance Crater.

Minerals in Our Environment

What minerals are in your toothpaste? A pencil? A telephone? This interactive resource adapted from the U.S. Geological Survey illustrates the variety of minerals used in everyday items found in kitchens, bathrooms, offices, and yards.

Mining Minerals and Metals

In this video from the Science and Technology Chat series, take a tour of a re-created Nevada gold mine to learn about mining techniques.

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Mixing Colors

Children learn the basics of mixing primary colors in this original animated video.

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Mixing Colors Interactive

Children learn the basics of mixing primary colors in this original interactive.

Monkeys

See a medium shot of two golden colored vervet monkeys in a tree in this Building Block video.

Washington Monument

This Building Block video features a long shot of the Washington Monument on a hazy day.

Moonrise

See time-lapse footage of a full moon rising, starting from the bottom left-hand corner and slowly filling the entire screen in this Building Block video shot in Los Angeles, California.

Mount St. Helens: Before and After

This multimedia resource produced for Teachers' Domain chronicles the 1980 volcanic eruption of Mount St. Helens. Featured are still images of the devastation, video of the eruption plume, and before-and-after satellite images of the affected region.

A Night in the Coral Reef

Coral reefs are often portrayed as brightly lit, bustling underwater marvels full of colorful creatures. This video segment, adapted from NOVA, paints a different picture as it explores the nocturnal behavior of organisms in the reef.

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Night Lizards

This video segment from Outdoor Nevada features the Western banded gecko and the desert night lizard, both members of the reptile family.

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Nisqually Glacier at Mount Rainier

Observe the Nisqually Glacier at Mount Rainier in this video segment from NatureScene.

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Observatory

This Building Block video features the silhouette of the tent at Chajnantor Observatory in Northern Chile that houses the Cosmic Backgrounder Imager.