Science, technology, and the environment | High school biology | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/h...

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 is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!

Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?ut...

Volunteer here: https://www.khanacademy.org/contribut...

Credits:
"Bananas" by Elembis [Public domain], via Wikimedia Commons:
https://commons.wikimedia.org/wiki/Fi...

"Gobabeb solar panels" by GbbIT, licensed under a Creative Commons Attribution License (CC BY-SA 3.0):
https://commons.wikimedia.org/wiki/Fi...
https://creativecommons.org/licenses/...

"Wind Mill of Bangui, Ilocos Norte" by JufelBaldado, licensed under a Creative Commons Attribution License (CC BY-SA 3.0):
https://commons.wikimedia.org/wiki/Fi...
https://creativecommons.org/licenses/...