Arthur Conan Doyle's The Poison Belt is another work of fiction by the author of the celebrated masterpiece The Adventures of Sherlock Holmes. The novella centers around apocalyptic disasters that threaten to end human existence on Earth. Professor Challenger, an English scientist who is interested in preserving nature and human life, anticipates the Earth's contact with a poison belt of ether. The dangerous gas is believed to have the power to suffocate all living beings to death. Professor Challenger invites his closest companions, Malone, Roxton and Summerlee, to join him and his wife in his house. They are asked to bring oxygen tanks with them to find that Challenger has prepared a sealed room to protect their lives. Later, from their little shelter, Challenger's team watch the destruction of the outside world and the dying of almost everything. When they finally run out of oxygen, they are pushed to get out of the sealed room. Yet, to their surprise, they do not die. The Earth has passed through the poison belt and humanity has survived.