When the World Screamed was a story written about Professor Challenger by Sir Arthur Conan Doyle. It was first published in Liberty magazine, 25 February – 3 March 1928. This short story is a part of the “Challenger series”, a collection of stories about the wealthy eccentric adventurer Professor Challenger. Professor Challenger, with the help of Mr Edward Malone and Mr Peerless Jones, drills into the earth until he reaches the mantle, convinced that it is a sentient being, akin to an echinus, and that by doing so he will be the first person to alert it to mankind’s presence. He awakens the giant creature, which then proceeds to destroy his excavation, covering the spectators with a noxious liquid in the process.