All courses
Subject
Climate & Energy
2 courses, 30 lessons. Start anywhere; nothing here assumes the rest.
Beginner-friendly
How the planet holds its heat
Work out where the extra heat comes from, where it goes, and why swapping the energy behind it is slow.
The chapters
- 1The blanket4 lessons
- 2What one degree does4 lessons
- 3Where the energy comes from4 lessons
- 4Changing it3 lessons
15 lessons · about 71 min
Start
Beginner-friendly
Sustainability: what can keep going
Work out whether a thing is being used faster than it comes back, who pays when a cost lands next door, how a footprint is counted, and who checks the claim.
The chapters
- 1What sustainable means4 lessons
- 2Who pays4 lessons
- 3How a footprint is counted4 lessons
- 4Who checks3 lessons
15 lessons · about 71 min
Start