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) organisms adversely affected by that acidification are included. This article is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change. (View Less)

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) lesson is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change. (View Less)

The site features an online game in which participants keep recyclable items out of the trash by guiding them into proper bins. Accompanying the game is a list of three categories of items that can be recycled, along with the benefits of doing so.... (View More) This lesson is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change. (View Less)

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) articles, videos, images and games focused on the science of climate change. (View Less)

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) education resource featuring articles, videos, images and games focused on the science of climate change. (View Less)

This site contains four word find puzzles; one on each of the following topics: air, water, land and life. In addition, the site features information on an Ecosphere - a self-contained living world inside a closed glass container. This lesson is... (View More) part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change. (View Less)

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) on the science of climate change. (View Less)

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) This lesson is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change. (View Less)

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) the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change. (View Less)

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) resource featuring articles, videos, images and games focused on the science of climate change. (View Less)