https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemistry-of-the-environment/x8bc8fb44369617ed:air-quality-and-climate/v/harmful-effects-of-burning-fuel-ur 2025-08-08T00:24:37.843818748Z Harmful effects of burning fuel Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Harmful effects of burning fuel Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/yQvDgLVx9mI.mp4/yQvDgLVx9mI.mp4 319 Impact of combustion reaction on environment https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemistry-of-the-environment/x8bc8fb44369617ed:air-quality-and-climate/e/harmful-effects-of-burning-fuel 2026-04-07T22:23:57.656416987Z Harmful Effects of Burning Fuel Lets answer some questions! Shankar R exercise https://www.khanacademy.org/science/grade-7-science-snc-aligned/x64f379bc07a3640a:physical-and-chemical-changes/x64f379bc07a3640a:impact-of-combustion-reaction-on-environment/e/effect-on-environment-due-to-burning-of-fuel 2024-09-23T16:29:43.571377873Z Effect on environment due to burning of fuel Let's solve some questions vibhor exercise https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:earth-and-society/x87d03b443efbea0a:earths-changing-climate/v/earths-changing-climate 2025-07-01T18:08:15.179962416Z Earth's changing climate Earth's temperature and weather patterns have changed rapidly over the past century. This process, known as climate change, is caused mainly by human activities, especially CO₂ emissions. To avoid the worst impacts of climate change, we need to both reduce emissions and remove excess CO₂ from the atmosphere. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/b5d3f3c1-1fcf-4639-87b1-1da887ae0544_1280_720_base.png Earth's changing climate Earth's temperature and weather patterns have changed rapidly over the past century. This process, known as climate change, is caused mainly by human activities, especially CO₂ emissions. To avoid the worst impacts of climate change, we need to both reduce emissions and remove excess CO₂ from the atmosphere. https://cdn.kastatic.org/ka-youtube-converted/z9xKxciHgo8.mp4/z9xKxciHgo8.mp4 270 Impact of combustion reaction on environment https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:atmospheric-pollution/x0b0e430a38ebd23f:other-atmospheric-pollution/v/acid-rain 2024-06-21T23:15:14.703721694Z Acid rain Acid rain, caused by pollution from burning fossil fuels, has harmful effects on the environment and human health. It forms when sulfur and nitrogen oxides interact with UV radiation and water molecules, creating corrosive sulfuric and nitric acid vapors. Acid rain damages buildings, contaminates water, acidifies soils, and harms forests. Despite reductions in emissions, it remains a global issue. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/d9f874cf-1450-41c3-87f7-273d42f816f3_1280_720_base.png Acid rain Acid rain, caused by pollution from burning fossil fuels, has harmful effects on the environment and human health. It forms when sulfur and nitrogen oxides interact with UV radiation and water molecules, creating corrosive sulfuric and nitric acid vapors. Acid rain damages buildings, contaminates water, acidifies soils, and harms forests. Despite reductions in emissions, it remains a global issue. https://cdn.kastatic.org/ka-youtube-converted/P4I-abHPa-I.mp4/P4I-abHPa-I.mp4 461 Impact of combustion reaction on environment https://www.khanacademy.org/science/grade-11-chemistry-snc-aligned/x203b0fc81a964b2d:nitrogen-and-sulfur/x203b0fc81a964b2d:acid-rain/e/acid-rain 2025-04-06T05:39:20.526945352Z Acid Rain Lets answer some questions on acid rain! Shankar R exercise https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:electromagnetic-radiation/x6679aa2c65c01e53:em-radiation-from-the-sun/v/the-_greenhouse_effect 2024-06-16T20:56:57.951759647Z The greenhouse effect Earth receives a spectrum of electromagnetic radiation from the Sun which peaks in the visible range. Some of this light makes it to Earth's surface and is absorbed. The absorbed light is converted to thermal vibrations of charged particles, which then radiate infrared light. Greenhouse gases in the atmosphere (including carbon dioxide, methane, and water vapor) absorb the infrared light and then re-emit it in random directions. Some escapes to space, and some remains trapped in the atmosphere. The greenhouse effect keeps Earth warm enough to be habitable. However, human activities are increasing greenhouse gas concentrations and are thereby affecting Earth's climate system. Solutions to this problem include solar, wind, and nuclear energy, which do not emit greenhouse gases during operation. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/4b17ace8-7bca-436f-a549-ed079209c44f_1280_720_base.png The greenhouse effect Earth receives a spectrum of electromagnetic radiation from the Sun which peaks in the visible range. Some of this light makes it to Earth's surface and is absorbed. The absorbed light is converted to thermal vibrations of charged particles, which then radiate infrared light. Greenhouse gases in the atmosphere (including carbon dioxide, methane, and water vapor) absorb the infrared light and then re-emit it in random directions. Some escapes to space, and some remains trapped in the atmosphere. The greenhouse effect keeps Earth warm enough to be habitable. However, human activities are increasing greenhouse gas concentrations and are thereby affecting Earth's climate system. Solutions to this problem include solar, wind, and nuclear energy, which do not emit greenhouse gases during operation. https://cdn.kastatic.org/ka-youtube-converted/Yn7ICU3Q4mE.mp4/Yn7ICU3Q4mE.mp4 808 Impact of combustion reaction on environment https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:global-change/x0b0e430a38ebd23f:greenhouse-effect/v/greenhouse-effect-and-greenhouse-gases 2024-06-28T21:00:15.59562973Z Greenhouse effect and greenhouse gases The greenhouse effect, driven by gases like carbon dioxide, methane, and water vapor, is essential for maintaining Earth's habitable temperatures. However, excessive concentrations of these gases—particularly due to human activities—can lead to global warming and climate change. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/27e417aa-bb45-422d-bb99-7e0e28da1250_1280_720_base.png Greenhouse effect and greenhouse gases The greenhouse effect, driven by gases like carbon dioxide, methane, and water vapor, is essential for maintaining Earth's habitable temperatures. However, excessive concentrations of these gases—particularly due to human activities—can lead to global warming and climate change. https://cdn.kastatic.org/ka-youtube-converted/YpfxiDktSoI.mp4/YpfxiDktSoI.mp4 419 Impact of combustion reaction on environment https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:biodiversity-and-human-impacts/x230b3ff252126bb6:global-change-biology/a/phet-simulation-greenhouse-effect 2025-04-01T18:49:52.583009735Z PhET simulation: Exploring the greenhouse effect Follow the link to dive deeper into the greenhouse effect using an interactive PhET simulation! article https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:global-change/x0b0e430a38ebd23f:greenhouse-effect/e/greenhouse-effect 2026-04-15T05:40:45.550331962Z Greenhouse effect Apply your understanding of greenhouse effect in this set of free practice questions aligned to AP standards. exercise https://www.khanacademy.org/science/cambridge-o-level-chemistry-cie/x8bc8fb44369617ed:chemistry-of-the-environment/x8bc8fb44369617ed:air-quality-and-climate/e/greenhouse-effect-and-acid-rain 2025-02-13T13:42:33.753834602Z Greenhouse effect and Acid rain Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:atmospheric-pollution/x0b0e430a38ebd23f:air-pollution/v/indoor-air-pollutants 2025-08-08T21:39:42.49220884Z Indoor air pollutants Indoor air pollutants can come from natural sources, human-made sources, and combustion. Common natural pollutants include radon, mold, and dust. Common human-made pollutants include Volatile Organic Compounds (VOCs) and formaldehyde. Common combustion pollutants include carbon monoxide, nitrogen oxides, sulfur dioxide, particulates, and tobacco smoke. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/a9bf0746-5acc-4969-b84a-457b79248224_1280_720_base.png Indoor air pollutants Indoor air pollutants can come from natural sources, human-made sources, and combustion. Common natural pollutants include radon, mold, and dust. Common human-made pollutants include Volatile Organic Compounds (VOCs) and formaldehyde. Common combustion pollutants include carbon monoxide, nitrogen oxides, sulfur dioxide, particulates, and tobacco smoke. https://cdn.kastatic.org/ka-youtube-converted/nqRPRwO79kg.mp4/nqRPRwO79kg.mp4 415 Impact of combustion reaction on environment https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:atmospheric-pollution/x0b0e430a38ebd23f:air-pollution/v/a-thermal-inversion-example-in-donora-ap-environmental-science-khan-academy 2025-08-08T21:39:42.49220884Z A thermal inversion example: the Donora smog During a thermal inversion, the normal temperature gradient in the atmosphere is altered as the air temperature at the Earth's surface is cooler than the air at higher altitudes. Thermal inversion traps pollution close to the ground, especially smog and particulates. The Donora death fog of 1948, a disastrous air pollution event in Pennsylvania, highlighted the lethal effects of trapped toxic emissions from industrial processes. This incident sparked the Clean Air Movement in the U.S., emphasizing the urgent need for air pollution control measures. Wieteke Holthuijzen video https://cdn.kastatic.org/ka_thumbnails_cache/084c6a8c-f0a9-4ffb-85d6-f9065b33eb07_1280_720_base.png A thermal inversion example: the Donora smog During a thermal inversion, the normal temperature gradient in the atmosphere is altered as the air temperature at the Earth's surface is cooler than the air at higher altitudes. Thermal inversion traps pollution close to the ground, especially smog and particulates. The Donora death fog of 1948, a disastrous air pollution event in Pennsylvania, highlighted the lethal effects of trapped toxic emissions from industrial processes. This incident sparked the Clean Air Movement in the U.S., emphasizing the urgent need for air pollution control measures. https://cdn.kastatic.org/ka-youtube-converted/OCMs3xNIquE.mp4/OCMs3xNIquE.mp4 114 Impact of combustion reaction on environment https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:atmospheric-pollution/x0b0e430a38ebd23f:air-pollution/a/photochemical-smog-and-ozone 2024-06-21T23:15:14.703721694Z Photochemical smog and ozone Photochemical smog is a mixture of tropospheric ozone and other air pollutants. Photochemical smog often forms in urban areas with high solar radiation. article