How to make a water filter
Going camping in the woods often means running out of water. There's a simple solution to that: Making a water filter. Jacob Karhu shows us how.
Why cruise ships are so harmful to the environment
3 zero-waste tips for doing the dishes
Meet the kagu, the barking bird that narrowly avoided extinction
How to protect against forest fires
Wildfires threaten wildlife across the globe
23 ocean giants that will make you feel very small