Human Impact

Earth has a natural greenhouse effect that traps heat from the Sun to keep the planet warm. But burning fossil fuels like coal, gas, and oil releases

Global warming is the long-term rise in Earth’s average temperature. It is mostly caused by human activities, like burning fossil fuels (coal, oil, an

Global warming is the long-term increase in Earth’s average temperature, mostly caused by human activities like burning fossil fuels and cutting down

Greenhouse gases like carbon dioxide, methane, and nitrous oxide trap heat in Earth’s atmosphere and contribute to global warming. These gases come ma

Air quality describes how clean or polluted the air is in a particular place. Poor air quality happens when harmful particles or gases build up in the

Air pollution is the presence of harmful substances in the air that can affect the health of people, animals, plants, and even the environment. These

Air pollutants are substances that make the air harmful to breathe or damaging to the environment. These pollutants can be solids, liquids, or gases,

Sources of air pollution are the places and activities that release harmful substances into the air. These pollutants come from both natural and human

Air pollution doesn’t just affect the air we breathe—it changes how ecosystems work. Some pollutants, like particulates (dust, ash, or soot), can bloc

Some air pollutants are dangerous gases and particles that can damage life even in small amounts. Carbon monoxide, a gas that you can’t see or smell,

Air pollution is caused by harmful substances entering the air, often from human activities. These pollutants can be gases, particles, or chemicals th

Acid rain is a type of precipitation that contains higher-than-normal levels of acids. It forms when sulfur dioxide (SO₂) and nitrogen oxides (NOₓ) ar

Reducing air pollution means taking steps to limit the harmful substances released into the air. These substances—called pollutants—come from sources