As humans we are part of the environment. With over 7.5 billion of us on Earth, our combined actions also have a big impact on the environment. As long as we are aware of the impact, we can do things as individuals, and working together as groups, to lessen the detrimental impact of billions of people. Explore important topics like air quality, water quality, the effects of climate change, and many others to make informed decisions about caring for our planet.

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Do you know where the oxygen you breathe comes from? It is produced by plants during photosynthesis! Photosynthesis is a process that plants use to convert sunlight into energy for themselves to live and grow. You can do an experiment called the floating leaf disk assay to see photosynthesis in action. Can you spot the oxygen bubbles that make the plant leaves float? Written instructions are available on our website at…
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Forests cover about 30% of the planet, but deforestation is clearing these essential habitats on a massive scale. What is deforestation? Find out the causes, effects, and solutions to deforestation. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter…
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About 15 billion trees are cut down every year! Machines can help with large-scale reforestation. In this activity, you are challenged to design and build a miniature seeding machine that can disperse seeds as precise and fast as possible. How many tree seeds can your machine sow? Written instructions as well as a free seeding grid template are available on our website at …
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Free science fair projects.