Professional Course

Frontiers of Science: Climate & Us

edX, Online
6 weeks
50 USD
Next course start
Start anytime See details
Self-paced Online
6 weeks
50 USD
Next course start
Start anytime See details
Self-paced Online
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Course description

Frontiers of Science: Climate & Us

This course begins by exploring the factors that set the Earth's temperature, considering the basic equation, Energy in = Energy out. We focus on the role of astronomical factors (sunspots and the eccentricity, obliquity, and precession of Earth in its orbit around the Sun), the reflectivity of Earth's surface, and the composition of the Earth's atmosphere in setting the Earth’s climate.

The temperature record, based on instrumental measurements, strongly indicates that the Earth has been warming over the last several decades, and dramatically so since 1975 when Wally Broecker, a former lecturer in Frontiers of Science, first coined the term "global warming." At the same time, the concentration of greenhouse gasses in the atmosphere, most prominently carbon dioxide, has been rapidly increasing. To put these recent changes in context of past data, we learn about paleoclimate proxies (e.g. tree rings and ice cores) and how it is that scientists can learn about the temperature and atmospheric content going back thousands and even millions of years ago.

With this knowledge, we confront past data, climate models, and fictions that lack scientific basis. We consider various tools used in climate science that allow scientists to compare contemporary climate change with natural changes that have occurred in the past, as well as to generate future climate forecasts. By investigating carbon isotope content of carbon dioxide in the atmosphere, we learn about the origin of the extra carbon and the role that humans have played in its release into the atmosphere. Finally, we explore the role of positive and negative feedback loops and why they make climate modeling particularly challenging. Feedback loops play an important role not only in climate, but in various biological processes, economics and more, and represent a critical scientific habit of mind taught in this course.

Upcoming start dates

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  • Self-paced Online
  • Online
  • English

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Training content

Global Warming

  • Introduction
  • Climate vs. Weather
  • Energy from the Sun
  • Sun’s Energy Variations - Astronomical Forces
  • Other Sources of Energy

Global Warming: The Earth’s Surface

  • The Atmosphere
  • Greenhouse Gasses
  • Carbon Isotopes
  • Sources of Carbon Dioxide

The Global Temperature

  • The Rising Average
  • Energy Balance

Past Climate

  • The Tree Ring Record
  • The Ice Core Record
  • 400,000 Years of Carbon Dioxide

Future Climate

  • Energy In Equals Energy Out
  • Feedback Loops & Climate Models
  • Foreshadowing
  • Debunking Myths

Global Plans and Prospects

  • Energy Facts
  • The Paris Accord
  • The Present and The Future

Course delivery details

This course is offered through Colgate University, a partner institute of EdX.

1-2 hours per week


  • Verified Track -$50
  • Audit Track - Free

Certification / Credits

What you'll learn

  • Leverage calculations, plots, probability, and models to make sense of both sparse and large datasets as well as complex natural systems.
  • Identify and draw positive and negative feedback loops and explore their importance.
  • Describe how scientists learn about what climate was like in the past.
  • Explain how scientists predict what climate will be like in the future.
  • Investigate what we know and what do we not know about the state of our warming planet and other consequences of anthropogenic greenhouse gas emissions.
  • Describe technological, political, social and economic strategies for climate adaptation and mitigation.

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141 Portland Street
02139 Cambridge Massachusetts


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