Earth

“A planet doesn’t explode of itself,” said drily
The Martian astronomer, gazing off into the air–
“That they were able to do it is proof that highly
Intelligent beings must have been living there.”

– John Hall Wheelock

Peruse through Wheelock’s Collected and you won’t find another poem as memorable or as good as this. As Einstein said:

“I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.”