Bill McKibben is founder and senior adviser emeritus of 350.org. His 1989 book The End of Nature is regarded as the first book for a general audience about climate change, and has appeared in 24 languages. He’s gone on to write many more...

The video showcases how young students from the Environmental Charter School in Inglewood, California, have developed a water-wise project to irrigate their school garden. The project involves building a portable drip irrigation system...

There is no minimum age for scientific discovery. Young scientists ask questions about topics that have puzzled humans for hundreds of years. This audio story introduces a high school senior who uses math to help astronomers search for...

Katherine Mangum currently teaches 5th-grade physical science and works with the 6th-grade First Lego League robotics team, G.I.R.L.S., at St. Catherine’s School in Richmond, VA. She also serves as president-elect of the Virginia...

The Eden Project in Cornwall serves as both an educational center and a tourist attraction, welcoming school groups and promoting sustainability. Discover how the project integrates local suppliers and eco-friendly practices in its...

In the overview video for Unit 3 of the Big History Project course, our fearless narrator Rachel Hansen turns our gaze on the Stars and Elements that came into being before our planet existed. We’ll see how our collective learning over...

In the Unit 4 overview, Rachel Hansen gives us a preview of the topics covered in Our Solar System & Earth. It’s an astronomical reminder that human history goes back long before humans, and that without humans like Alfred Wegener, Marie...

The rise of intensive agriculture has had vast consequences for the planet's land, water supply, and climate. Could the reduction in demand for animal products be the key to a more equitable future for everyone - and are we capable of...

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We start our “Gravity Assist” virtual tour of the solar system with – where else – the Sun! Jim is joined by Project Scientist Dr. Nicky Fox of the Johns Hopkins University Applied Physics Lab to talk about our fascinating star and...

Join us as we head to Oxfordshire to learn all about water with schools from across the UK using Google Hangouts. Tracy welcomes us to Oxfordshire, where we’ll find out why water is so very important as well as how it is made safe for us...

Join us as we head to Oxfordshire to learn all about water with schools from across the UK using Google Hangouts. Tracy welcomes us to a reservoir, where we’ll find out why water is so very important as well as how it is made safe for us...

What do pineapples, piranhas and poisonous beans have to do with your favourite footwear? We all rely on biodiversity, which is the incredible variety of life on our planet. Without it, we wouldn't have many of the things we love and use...

Learn the basics about the properties of oxygen. Oxygen is a gas, it has no smell, colour, or taste; but without it, we as humans would not be able to inhabit planet Earth. When cooled to a very low temperature, it will form a liquid and...

Learn the basics about the natural greenhouse effect. The atmosphere helps to keep our planet warm by making it harder for the energy we get from the sun to escape back to the universe. Our atmosphere is held to the earth by the force of...