Topic: Human Impacts

Coral bleaching

Science Middle School

Ocean Warming is Forcing Coral Reefs to Adapt

Life Science Environment Ecosystems Human Impacts Oceans

Oceans around the world are seeing declines in healthy reefs. The changes are caused by many factors, including the increase in ocean temperatures due to global warming. This public radio story is about coral reefs that are endangered. But some corals are thriving despite the increase in ocean temperature.

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Weathering and erosion

Science Middle School

Beach Erosion Threatens Infrastructure

Earth and Space Science Environment Geography Physical Science Ecosystems Human Impacts Oceans

What happens when human structures and nature come into conflict? Ocean Beach in San Francisco is naturally eroding, but the consequence of this shifting shoreline is that a sewage treatment plant is put in peril. Without intervention, raw sewage could be dumped into the ocean. A rock wall has temporarily stabilized the pipeline, but not without complications. Now other solutions are being considered, including construction of an artificial dune.

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Spotted dolphins and spinner dolphins

Science Middle School

Spotted Dolphins and Spinner Dolphins

Life Science Animals Ecosystems Human Impacts Oceans

Spotted dolphins and spinner dolphins are often found living with tuna. When people started using large nets to capture tuna in the 1960s, many dolphins were killed as well. Scientists responded by sending “observers” on tuna boats to keep track of the number of dolphins killed. Scientists store samples of different parts of dolphins collected from dolphins killed by the tuna nets. In this public radio story you hear from a scientist who is studying these tissues to try to learn more about these dolphins in order to help preserve dolphin populations.

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Quieting the ocean

Science Middle School

Noises in the Ocean Threaten Marine Animals

Life Science Earth and Space Science Environment Ecosystems Human Impacts Oceans Sound

Oceans have become very loud because of humans. In this public radio story you'll hear some of the things that make the ocean so noisy. Scientists are worried all that noise is hurting marine life. They want to find ways to quiet down the ocean and study what the noise means for marine mammals.

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Somethings in the water hole

Science Middle School

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Microbes in the Water Hole

Life Science Environment Ecosystems Human Impacts Ecology

While popular swimming holes are commonly tested for bacteria, few are tested for protozoans. This audio story discusses the problem of protozoan-caused illnesses for swimmers in rivers, lakes and ponds. The story distinguishes between different types of microbes, and is an excellent introduction to classification of microorganisms and/or classification in general.

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Corals and climate change

Science Middle School

Corals and Climate Change

Life Science Environment Climate Change Weather and Climate Human Impacts Oceans

What makes up a coral? This audio story takes you to an underwater observatory where a scientist is studying coral reefs. The scientist has found that CO2 in the ocean is making the ocean warmer and dissolving the coral reef system. But the scientist also discusses how coral reefs can recover. Listen to this story to hear the factors that threaten coral reefs and how they can recover.

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Coaltrain

Science Middle School

Clearing Carbon From Our Air

Earth and Space Science Environment Climate Change Human Impacts Atmosphere

Carbon exists in all living things, including proteins, DNA, and fats. When living things exhale, the result is carbon dioxide. As our world develops, we produce more carbon dioxide with the burning of fossil fuels and the use of cars, trains, and planes. This gas is causing an imbalance in the atmosphere which affects the warming of the planet. Listen to hear how much carbon dioxide humans are responsible for and the effects of global warming.

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