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Adding lemon juice to water increases the water's acidity; adding carbon dioxide to water will also increase acidity. The effects of the carbon dioxide acidification of ocean water from burning fossil fuels are discussed and images of some of the... (View More)

Keywords: Greenhouse gases
Audience: Informal education
Materials Cost: Free

Following a brief introduction to tidal energy, this article discusses the use of tidal generators to convert that energy into electricity. The article also features a description and images of the Invergordon, Scotland tidal energy generator. This... (View More)

Audience: Informal education
Materials Cost: Free

The consequences of both sea ice melting and increases in ocean water temperature are presented in this examination of sea level- another of Earth's vital signs. This lesson is part of the Climate Kids website, a NASA education resource featuring... (View More)

Keywords: Global warming
Audience: Informal education
Materials Cost: Free

One of Earth's vital signs, the extent of sea ice cover in the Arctic, is examined. An image and accompanying text describe the extent and consequences of the reduction in that sea ice. This article is part of the Climate Kids website, a NASA... (View More)

Keywords: Global warming
Audience: Informal education
Materials Cost: Free

Instructions are provided for constructing a terrarium. The analogy between the terrarium and Earth is also provided. This activity is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused... (View More)

This online game allows participants to maneuver solar panels and a wind turbine in order to provide electricity to light five homes. Background information on sources of electricity- fossil fuels, solar energy and wind energy- is also presented.... (View More)

Keywords: Solar power
Audience: Informal education
Materials Cost: Free

The concentration of carbon dioxide in the atmosphere is the focus of this article; the units of measurement (ppm) are explained and the importance of monitoring that number as one of Earth's vital signs is also discussed. This article is part of... (View More)

Keywords: Global warming
Audience: Informal education
Materials Cost: Free

This article examines the ocean's role in heat absorption and carbon dioxide absorption. The consequences of changes in those, as well as in ocean water salinity, are discussed. The article is part of the Climate Kids website, a NASA education... (View More)

Keywords: Global warming
Audience: Informal education
Materials Cost: Free

NASA scientists, using several NASA Earth observing satellites, continue to seek answers to questions related to climate change. Several of those questions, focused on such topics as the effect of clouds and aerosols, and the role of the sun's... (View More)

Keywords: Global warming
Audience: Informal education
Materials Cost: Free

A question and answer format is used to differentiate between weather and climate, and to provide a brief overview of global warming. This lesson is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and... (View More)

Keywords: Global warming
Audience: Informal education
Materials Cost: Free