Portal:Environment/Did you know
- ...that chlorofluorocarbons (CFCs) can cause ozone depletion, and the ozone hole needs to take more than a decade to recover?
- ... that the recycling symbol is based on the Möbius strip?
- ...that in 2004, the worldwide energy consumption of the human race was 15 TW (= 1.5 x 1013 W) with 86.5% from burning fossil fuel?
- ... that rivers have been classified by many criteria, including their topography, their biotic status and their relevance to white water rafting and canoeing activities?
- ... that Summer Rayne Oakes has been called "the world's first eco-model" because she only models clothes made from organic or recycled materials?
Usage
These "Did you know..." subpages are randomly displayed using {{Random subpage}}.
- Add a new "Did you know" to the next available subpage.
- Update the "Random subpage" start and end values above to include the new DYK and evenly distribute the number of items across all four display templates.
Did you know list
Did you know 1
Did you know 2
Portal:Environment/Did you know/2
![Chemical structure of carbon dioxide](http://upload.wikimedia.org/wikipedia/commons/thumb/4/41/Carbon-dioxide-3D-vdW.png/50px-Carbon-dioxide-3D-vdW.png)
- ...that many countries that signed the Kyoto Protocol actually increased the greenhouse gas emissions, contrary to the treaty? And for that, the 15 January 2011, a representative of the country had to stick their head in a hole of sand in Cancun, Mexico?
Did you know 3
Portal:Environment/Did you know/3
- ...that in United Nations Intergovernmental Panel on Climate Change fourth assessment report, average Arctic temperatures increased at almost twice the global average rate in the past 100 years?
Did you know 4
Portal:Environment/Did you know/4
- ...that chlorofluorocarbons (CFCs) can cause ozone depletion, and the ozone hole needs to take more than a decade to recover?
Did you know 5
Portal:Environment/Did you know/5
![London Smog](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/LondonSmog.jpg/50px-LondonSmog.jpg)
- ...that the word smog is a portmanteau of smoke and fog?
Did you know 6
Portal:Environment/Did you know/6
- ...that tidal power is a form of hydropower that exploits the rise and fall in sea levels due to tides in order to generate electricity?
Did you know 7
Portal:Environment/Did you know/7
![Incandescent light bulb](http://upload.wikimedia.org/wikipedia/commons/thumb/1/10/Gluehbirne_2_db.jpg/50px-Gluehbirne_2_db.jpg)
- ...that the incandescent light bulb has an energy efficiency of only 5%, and the rest of the energy is used to generate heat rather than light?
Did you know 8
Portal:Environment/Did you know/8
- ...that there was a Three Mile Island accident in United States where a partial meltdown of a nuclear powerplant took place in 1979?
Did you know 9
Portal:Environment/Did you know/9
- ... that the recycling symbol is based on the Möbius strip?
Did you know 10
Portal:Environment/Did you know/10
- ... that the first National Park was the Yellowstone National Park in the United States?
Did you know 11
Portal:Environment/Did you know/11
- ... that the idea of atmospheric gases trapping the Suns heat to produce the greenhouse effect was put forward by Joseph Fourier in the 1820’s?
Did you know 12
Portal:Environment/Did you know/12
- ... that Minamata disease was caused by mercury poisoning due to pollution drained into Minamata Bay in Japan?
Did you know 13
Portal:Environment/Did you know/13
- ... that methane has 25 times the impact of carbon dioxide as a greenhouse gas?
Did you know 14
Portal:Environment/Did you know/14
- ... that the global ecological footprint is 1.8 global hectares (gha) per capita?
Did you know 15
Did you know 16
Portal:Environment/Did you know/16
- ... that since 1500 CE 784 extinctions have been documented by the International Union for Conservation of Nature and Natural Resources?
Did you know 17
Portal:Environment/Did you know/17
- ...that in 2004, the worldwide energy consumption of the human race was 15 TW (= 1.5 x 1013 W) with 86.5% from burning fossil fuel?
Did you know 18
Portal:Environment/Did you know/18
- ...that the United Nations Environment Programme (or UNEP), which coordinates United Nations environmental activities, was founded in 1972?
Did you know 19
Portal:Environment/Did you know/19
- ... that the average United States citizen consumes 119pg (10−12 g) of dioxin per day?
Did you know 20
Portal:Environment/Did you know/20
- ... that each year in 22,500 cemeteries across the United States approximately 30 million board feet (70,000 m³) of hardwoods are buried as caskets?
Did you know 21
Portal:Environment/Did you know/21
- ... that rivers have been classified by many criteria, including their topography, their biotic status and their relevance to white water rafting and canoeing activities?
Did you know 22
Portal:Environment/Did you know/22
- ... that climate change scenarios, Special Report on Emissions Scenarios (SRES) were superseded by Representative Concentration Pathway (RCP)?
Did you know 23
Portal:Environment/Did you know/23
- ... that the Andrew W. Breidenbach Environmental Research Center was originally housed in a Cincinnati mansion built around 1815?
Did you know 24
Portal:Environment/Did you know/24
- ... that Summer Rayne Oakes has been called "the world's first eco-model" because she only models clothes made from organic or recycled materials?
Did you know 25
Portal:Environment/Did you know/25
- ... that Liberian lawyer Alfred Brownell won the "Green Nobel" prize for his efforts to protect more than 500,000 acres (2,000 km2) of tropical forest land?
Did you know 26
Portal:Environment/Did you know/26
- ... that the entire editorial board of the International Journal of Occupational and Environmental Health resigned in protest in November 2017 over disputes involving the new editor-in-chief?
Nominations
More "Did you know"s can be nominated here. General guidelines for nominations, loosely based on Wikipedia:Did you know include:
- Pick DYKs in articles that are interesting.
- Look for articles that are over 1,000 characters in size - no stubs.
- The "Did you know?" fact must be mentioned in the article.
- Try to select articles that cite their sources, particularly the item mentioned.