1. Electricity is a form of energy that is found in nature but that can be produced artificially by man. An example of electricity in nature is lightning. Lightning is a discharge of static electricity in the atmosphere.

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Electricity is not only found in power lines and electronics made by man, but is also found in nature. In fact electricity is all around us. We see it in lightning storms, animals use it as a defense, even our bodies use it to send messages to our muscles.

People use electricity for lighting, heating, cooling, and refrigeration and for operating appliances, computers, electronics, machinery, and public transportation systems.

Affordable, reliable electricity is fundamental to modern life. Electricity provides clean, safe light around the clock, it cools our homes on hot summer days (and heats many of them in winter), and it quietly breathes life into the digital world we tap into with our smartphones and computers.

Electricity allows us to power the technology we use every day. If you plan on trying to live without electricity, you will no longer be able to turn on the central heating in your home, use the toilet, preserve food in your fridge/freezer or have clean running water.

Most come from the combustion of fossil fuels in cars, buildings, factories, and power plants. The gas responsible for the most warming is carbon dioxide, or CO2.

CO2—also known as greenhouse gases—has become a major concern as climate change becomes a bigger issue. China is the world’s largest contributing country to CO2 emissions—a trend that has steadily risen over the years—now producing 10.06 billion metric tons of CO2.

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Yes, by increasing the abundance of greenhouse gases in the atmosphere, human activities are amplifying Earth’s natural greenhouse effect.

Humans are increasingly influencing the climate and the earth’s temperature by burning fossil fuels, cutting down forests and farming livestock. This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming.