Hacker News
- Plastic bag found at the bottom of world’s deepest ocean trench https://education.nationalgeographic.org/resource/plastic-bag-found-bottom-worlds-deepest-ocean-trench/ 33 comments
- There will soon be seven billion people on the planet (2011) https://education.nationalgeographic.org/resource/population-seven-billion/ 2 comments
- Please save the earth ocean 😭😭😭 https://education.nationalgeographic.org/resource/marine-pollution/ 2 comments environment
- Have you ever wondered what the Sources of pollution are? https://education.nationalgeographic.org/resource/point-source-and-nonpoint-sources-pollution 3 comments environment
- The sun is free, wind is free, moving waters are free and the heat from underground is free https://education.nationalgeographic.org/resource/geothermal-energy 34 comments climate
- Species concepts of language https://education.nationalgeographic.org/resource/speciation 54 comments linguistics