Introduction

The ability or capacity to do work, measurable in terms of its ability to be converted between forms but not created or destroyed.

Energy that comes from resources which are naturally replenished, such as solar, wind, and hydropower.

The long-term rise in Earth's average surface temperature due to human activities, primarily the emission of greenhouse gases.

Precipitation that contains harmful amounts of sulfur dioxide and nitrogen oxides, leading to environmental damage.

The reduction of ozone in the stratosphere caused by man-made chemicals, leading to increased levels of UV radiation reaching Earth's surface.