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Lee Hotz: Inside an Antarctic Time Machine
http://ed.ted.com/lessons/lee-hotz-inside-an-antarctic-time-machine

Lee Hotz, TED-Ed

In this TED talk, Wall Street Journal science columnist Lee Hotz describes the research of the Western Antarctic Ice Sheet (WAIS) Divide project, in which scientists examine ice core records of climate change in the past to find clues to climate change in the future.

Video length 9:46 min.

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Climate Literacy
About Teaching Climate Literacy

Scientific observations indicate that global climate has changed in the past, is changing now, and will change in the future. The magnitude and direction of this change is not the same at all locations on Earth.
About Teaching Principle 4
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Natural processes driving Earth’s long-term climate variability do not explain the rapid climate change observed in recent decades. The only explanation that is consistent with all available evidence is that human impacts are playing an increasing role in climate change. Future changes in climate may be rapid compared to historical changes.
About Teaching Principle 4
Other materials addressing 4f
Natural processes that remove carbon dioxide from the atmosphere operate slowly when compared to the processes that are now adding it to the atmosphere. Thus, carbon dioxide introduced into the atmosphere today may remain there for a century or more. Other greenhouse gases, including some created by humans, may remain in the atmosphere for thousands of years.
About Teaching Principle 4
Other materials addressing 4g
Based on evidence from tree rings, other natural records, and scientific observations made around the world, Earth’s average temperature is now warmer than it has been for at least the past 1,300 years. Average temperatures have increased markedly in the past 50 years, especially in the North Polar Region.
About Teaching Principle 4
Other materials addressing 4e
Environmental observations are the foundation for understanding the climate system. From the bottom of the ocean to the surface of the Sun, instruments on weather stations, buoys, satellites, and other platforms collect climate data. To learn about past climates, scientists use natural records, such as tree rings, ice cores, and sedimentary layers. Historical observations, such as native knowledge and personal journals, also document past climate change.
About Teaching Principle 5
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Benchmarks for Science Literacy
Learn more about the Benchmarks

Scientific investigations usually involve the collection of relevant data, the use of logical reasoning, and the application of imagination in devising hypotheses and explanations to make sense of the collected data.
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The earth's climates have changed in the past, are currently changing, and are expected to change in the future, primarily due to changes in the amount of light reaching places on the earth and the composition of the atmosphere. The burning of fossil fuels in the last century has increased the amount of greenhouse gases in the atmosphere, which has contributed to Earth's warming.
Explore the map of concepts related to this benchmark

Notes From Our Reviewers The CLEAN collection is hand-picked and rigorously reviewed for scientific accuracy and classroom effectiveness. Read what our review team had to say about this resource below or learn more about how CLEAN reviews teaching materials
Teaching Tips | Science | Pedagogy | Technical Details

Teaching Tips

  • This is meant to be used in a "flipped" lesson. Teachers should explore the Ted-Ed site to learn more about using "flipped lessons".
  • See also other resources on the CLEAN site that can be used to investigate ice cores more closely after watching this video.

About the Science

  • Science columnist Lee Hotz describes the project at WAIS Divide, Antarctica, where a team of scientists drills into ten-thousand-year-old ice cores to extract and analyze vital data on our changing climate.
  • Comments from expert scientist: The video is concise and easy to understand for people not within science fields. The speaker, Lee Hotz, captures interest without using much jargon. This seems like a nice, brief introduction into Antarctic ice drilling.

About the Pedagogy

  • This is a TED-Ed video lecture, which viewers can watch and then take a quick quiz before digging deeper into some other online resources that align with the video.
  • Quick quiz and think questions are for accountability rather than conceptual understanding.

Technical Details/Ease of Use

  • Quality up to 480 pixels. Best viewed online or using a projector.

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