Ice
There was something that struck me on a trip to Iceland a few years ago about the ice caves under the Vatnajökull glacier. In the dead of winter, ice caves that had existed for thousands of years were slowly disappearing in rivulets of water before our very eyes. The warming temperatures were taking away a magnificent creation of nature and it somehow made us value it’s beauty more because we knew they would soon be gone. Their ephemeral beauty was—is—a call for help from nature itself.