https://www.khanacademy.org/science/strengthened-shs-earth-and-space-science-1/x006d5d274c051fd7:origin-and-structure-of-the-earth/x006d5d274c051fd7:earth-s-place-in-the-solar-system/v/bhp-earth-and-early-atmosphere 2023-07-02T10:05:56.724382666Z WATCH: Earth and the Early Atmosphere The Earth's atmosphere keeps changing, creating an endless cycle of warming, cooling, and recovery. Discover how Earth's early atmosphere formed and evolved, as violent collisions that created intense heat and pressure, the formation of oceans, and the creation of the moon. Explore the rise of oxygen, the role of cyanobacteria, and the changes that led to today's diverse life forms. Big History Project video https://cdn.kastatic.org/googleusercontent/Sfjp8NfDD5pJAsTFtTPhmuuPF9JkRzobuADDtJ33zckSRw4j85FMXBJqiPJJzn41bP70vyYXxlBCQtBUpYPUiwA WATCH: Earth and the Early Atmosphere The Earth's atmosphere keeps changing, creating an endless cycle of warming, cooling, and recovery. Discover how Earth's early atmosphere formed and evolved, as violent collisions that created intense heat and pressure, the formation of oceans, and the creation of the moon. Explore the rise of oxygen, the role of cyanobacteria, and the changes that led to today's diverse life forms. https://cdn.kastatic.org/ka-youtube-converted/Gyn754vw8ZQ.mp4/Gyn754vw8ZQ.mp4 333 Earth’s climate system and its dynamics https://www.khanacademy.org/science/grade-9-chemistry-snc-aligned/x22d5b83c2ea2dc38:environmental-chemistry/x22d5b83c2ea2dc38:adverse-effects-of-air-pollution/a/before-you-watch-what-is-climate-change-crash-course-climate-energy-1 2024-08-14T01:23:16.657326838Z WATCH: What is Climate Change? This video introduces some core concepts that will help guide us throughout the course, like the difference between climate and weather. We’ll also take a look back through the Earth’s history at other periods of significant climate change. article https://www.khanacademy.org/science/strengthened-shs-biology-2/x62f5297cda63eb8d:plant-organ-systems/x62f5297cda63eb8d:importance-of-plants/v/bhp-atmosphere-climate 2023-10-12T14:09:03.712558587Z WATCH: The Atmosphere and Climate Earth's climate has always changed due to natural cycles. But human activities, especially since the Industrial Revolution, have increased carbon dioxide levels, intensifying the greenhouse effect. This human-induced global warming could raise temperatures more than typical natural fluctuations, threatening habitats and causing sea-level rise. To combat this, global commitment to energy conservation, sustainable energy, and forest preservation is needed. Big History Project video https://cdn.kastatic.org/googleusercontent/yRX2cJC5JYpwonfB5Xvt6R8s_nWRSpGYLjtVjQakRHiNZWod55B1fHdto2xZJgGxABtaP0l9lBZjGI2Gw9ESQrwZ WATCH: The Atmosphere and Climate Earth's climate has always changed due to natural cycles. But human activities, especially since the Industrial Revolution, have increased carbon dioxide levels, intensifying the greenhouse effect. This human-induced global warming could raise temperatures more than typical natural fluctuations, threatening habitats and causing sea-level rise. To combat this, global commitment to energy conservation, sustainable energy, and forest preservation is needed. https://cdn.kastatic.org/ka-youtube-converted/Jfaipkw691E.mp4/Jfaipkw691E.mp4 219 Earth’s climate system and its dynamics https://www.khanacademy.org/science/10th-grade-science-matatag/xaf924d0c475e22d4:1st-quarter/xaf924d0c475e22d4:climate-change/a/read-data-exploration-how-do-we-know-climate-change-is-real 2024-09-26T20:55:17.177415621Z READ: Data Exploration - How Do We Know Climate Change Is Real? The global scientific community agrees that climate change is happening, and it’s caused by human activity. In this article, you’ll dig into four charts about global temperature anomaly, CO2 emissions, and the correlations between them. article https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:weather-and-climate/x87d03b443efbea0a:global-winds-and-currents/v/global-winds-and-currents 2022-09-02T05:09:52.799348646Z Global winds and currents Large-scale currents are found throughout Earth's atmosphere and oceans. In the atmosphere, air currents are caused by the uneven heating of Earth's surface. In the ocean, water currents are caused by winds or differences in density. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/d558b652-d5ae-4aa4-b277-0fff6a0a47a5_1280_720_base.png Global winds and currents Large-scale currents are found throughout Earth's atmosphere and oceans. In the atmosphere, air currents are caused by the uneven heating of Earth's surface. In the ocean, water currents are caused by winds or differences in density. https://cdn.kastatic.org/ka-youtube-converted/jjEfDULyEOg.mp4/jjEfDULyEOg.mp4 356 Earth’s climate system and its dynamics https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:weather-and-climate/x87d03b443efbea0a:global-winds-and-currents/a/global-winds-and-currents 2025-08-26T23:00:40.300039358Z Global winds and currents Review your understanding of global winds and currents in this free, standards-aligned article. article https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:weather-and-climate/x87d03b443efbea0a:global-winds-and-currents/e/understand-global-winds-and-currents 2025-08-13T04:01:09.814076401Z Understand: global winds and currents Check your understanding of global winds and currents in this set of free, standards-aligned practice questions. Lauren Rosebrugh 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 Earth’s climate system and its dynamics https://www.khanacademy.org/science/grade-8-science-tx/x3cd7525f789ab4f1:climate-change/x3cd7525f789ab4f1:human-activities-and-climate-change/e/understand-human-activities-and-climate-change 2026-03-14T07:10:38.271946002Z Understand: human activities and climate change Check your understanding of human activities and climate change in this set of free, standards-aligned practice questions. Wieteke Holthuijzen exercise https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:earth-and-society/x87d03b443efbea0a:human-impacts-on-the-environment/v/human-impacts-on-the-environment 2025-05-07T17:11:10.976262835Z Human impacts on the environment Human activities—such as land use, water use, and deforestation—often have negative impacts on the environment. These impacts worsen as the human population grows and consumes more resources. Science can help identify ways to reduce our impacts, but it is ultimately up to us to take action. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/5d88359d-4b8d-407f-86f3-06c1792814a4_1280_720_base.png Human impacts on the environment Human activities—such as land use, water use, and deforestation—often have negative impacts on the environment. These impacts worsen as the human population grows and consumes more resources. Science can help identify ways to reduce our impacts, but it is ultimately up to us to take action. https://cdn.kastatic.org/ka-youtube-converted/ThpzFgoGrKE.mp4/ThpzFgoGrKE.mp4 308 Earth’s climate system and its dynamics https://www.khanacademy.org/science/grade-8-science-tx/x3cd7525f789ab4f1:climate-change/x3cd7525f789ab4f1:human-activities-and-climate-change/a/human-activities-and-climate-change 2025-07-09T20:41:48.967358068Z Human activities and climate change Learn about how human activities—including the release of greenhouse gases, deforestation, and urbanization—can affect climate. article https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:earth-and-society/x87d03b443efbea0a:earths-changing-climate/e/apply-earths-changing-climate 2026-02-27T12:30:36.531197313Z Apply: Earth's changing climate Apply your understanding of climate change in this set of free, standards-aligned practice questions. Lauren Rosebrugh exercise