How can I save the oceans from plastic?
The cost of one day on Earth
How can I stop extinction?
Why should I eat less meat?
What's the best use of my energy?
Should I drink bottled water?
How can I use less water?
How do I use palm oil responsibly?
How do I use renewables at home?
Is it safe to exercise in a polluted city?
Watch all the Econundrum videos here!