https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:aquatic-and-terrestrial-pollution/x0b0e430a38ebd23f:waste-disposal-reduction-and-treatment/v/solid-waste-disposal 2024-06-21T23:15:14.703721694Z Solid waste disposal Solid waste is most often disposed of in open dumps and sanitary landfills. A sanitary municipal landfill consists of a bottom liner (plastic or clay), a storm water collection system, a leachate collection system, a cap, and a methane collection system. However, landfills can contaminate groundwater, cause leachate pollution, and release harmful gases. Solid waste can also be disposed of through incineration, where waste is burned at high temperatures. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/0b70a8f3-f4f6-4b41-9992-519db064a1c2_1280_720_base.png Solid waste disposal Solid waste is most often disposed of in open dumps and sanitary landfills. A sanitary municipal landfill consists of a bottom liner (plastic or clay), a storm water collection system, a leachate collection system, a cap, and a methane collection system. However, landfills can contaminate groundwater, cause leachate pollution, and release harmful gases. Solid waste can also be disposed of through incineration, where waste is burned at high temperatures. https://cdn.kastatic.org/ka-youtube-converted/LOzMugtKmN4.mp4/LOzMugtKmN4.mp4 476 Proper handling and disposal of materials https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:biodiversity-and-human-impacts/x230b3ff252126bb6:sustainability/v/science-technology-and-the-environment 2024-06-28T21:00:15.59562973Z Science, technology, and the environment Scientists and engineers are using banana peels and leaves to create biodegradable materials, such as shoe soles and containers, which help to reduce plastic waste and promote sustainability. Other green technologies include solar panels and windmills, which harness renewable energy sources to reduce reliance on fossil fuels and decrease greenhouse gas emissions. However, there are challenges and drawbacks of implementing these technologies, such as initial high costs and potential job losses in conventional industries. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/eb76cc57-04ec-4bcf-aa05-5301a4c161e4_1280_720_base.png Science, technology, and the environment Scientists and engineers are using banana peels and leaves to create biodegradable materials, such as shoe soles and containers, which help to reduce plastic waste and promote sustainability. Other green technologies include solar panels and windmills, which harness renewable energy sources to reduce reliance on fossil fuels and decrease greenhouse gas emissions. However, there are challenges and drawbacks of implementing these technologies, such as initial high costs and potential job losses in conventional industries. https://cdn.kastatic.org/ka-youtube-converted/FIYVnvHa2dc.mp4/FIYVnvHa2dc.mp4 385 Proper handling and disposal of materials https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:aquatic-and-terrestrial-pollution/x0b0e430a38ebd23f:waste-disposal-reduction-and-treatment/v/ap-es-sewage-treatment 2024-06-21T23:15:14.703721694Z Sewage treatment The process of waste disposal, reduction, and treatment involves primary, secondary, and sometimes tertiary treatments. Primary treatment physically removes large objects, while secondary treatment uses aerobic bacteria to break down organic waste. Tertiary treatment, though not always used due to cost, targets specific wastewater components for removal. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/09af1cda-eb97-461f-8326-3c1946c6a972_1280_720_base.png Sewage treatment The process of waste disposal, reduction, and treatment involves primary, secondary, and sometimes tertiary treatments. Primary treatment physically removes large objects, while secondary treatment uses aerobic bacteria to break down organic waste. Tertiary treatment, though not always used due to cost, targets specific wastewater components for removal. https://cdn.kastatic.org/ka-youtube-converted/_a8Mbkt_o80.mp4/_a8Mbkt_o80.mp4 293 Proper handling and disposal of materials https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:aquatic-and-terrestrial-pollution/x0b0e430a38ebd23f:waste-disposal-reduction-and-treatment/e/waste-disposal-reduction-and-treatment 2022-09-07T01:03:50.067296221Z Waste disposal, reduction, and treatment Apply your understanding of waste disposal, reduction, and treatment in this set of free practice questions aligned to AP standards. exercise https://www.khanacademy.org/science/teacher-resources-ngss-science-domain/x2811526c37de0eab:hands-on-science-activities/x2811526c37de0eab:middle-school-earth-and-space-science-activities/a/activity-how-can-we-reduce-our-garbage-footprint 2026-02-27T18:00:31.886851552Z Activity: How can we reduce our garbage footprint? Make science come alive in your classroom with this free hands-on activity aligned to middle school NGSS standards. article