Fire and Ice
Can you make fire from ice?
Yes!!!!
You carve a lens shape from clear ice and place it in the path of sunlight while aiming it at dried tinder.
image credit: Luca Florio, CC BY-SA 2.0
https://commons.wikimedia.org/wiki/File:A\_Shot\_of\_Ice\_and\_Fire\_-\_Flickr\_-\_ElleFlorio.jpg
http://primitiveways.com/fire\_from\_ice.html