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  2. IB Group 4 subjects - Wikipedia

    en.wikipedia.org/wiki/IB_Group_4_subjects

    24] The computer science course was recently updated and moved from Group 5 (as an elective course) to Group 4, becoming a full course, from first examinations in 2014. The structure and assessment of the course has changed to greater emphasize problem solving rather than Java program construction. [ 25 ]

  3. Using a programmable thermostat's setback feature to limit heating or cooling in a temporarily unoccupied building does not waste as much energy as leaving the temperature constant. Using setback saves energy (5–15%) because heat transfer across the surface of the building is roughly proportional to the temperature difference between its ...

  4. Waste by country - Wikipedia

    en.wikipedia.org/wiki/Waste_by_country

    Developed countries consume more than 60% of the world industrial raw materials and only comprise 22% of the world's population. [4] As a nation, the USA generates more waste than any other nation in the world with 4.5 pounds (2.0 kg) of municipal solid waste (MSW) per person per day, fifty five percent of which is contributed as residential ...

  5. Waste - Wikipedia

    en.wikipedia.org/wiki/Waste

    According to the Intergovernmental Panel on Climate Change (IPCC), municipal solid waste is expected to reach approximately 3.4 Gt by 2050; however, policies and lawmaking can reduce the amount of waste produced in different areas and cities of the world. [43] Measures of waste management include measures for integrated techno-economic ...

  6. Recycling - Wikipedia

    en.wikipedia.org/wiki/Recycling

    This is an accepted version of this page This is the latest accepted revision, reviewed on 15 February 2025. Converting waste materials into new products This article is about recycling of waste materials. For recycling of waste energy, see Energy recycling. "Recycled" redirects here. For the album, see Recycled (Nektar album). The three chasing arrows of the universal recycling symbol ...

  7. Science World (magazine) - Wikipedia

    en.wikipedia.org/wiki/Science_World_(magazine)

    Science World is an educational magazine published by Scholastic Corporation targeting primarily children between grades 6 and 12 and covering many aspects of science, including "physical science, life science/health, earth and space science, environmental science, and technology."