The eruption of Krakatoa in 1883 sent volcanic dust and gases circling the Earth, creating spectacular sunsets captured by artists.
William Ashcroft via Houghton Library/Harvard University
Ploughing his life savings into buying the land under which the lost city lies, Stuart Wilson has made a once-in-a-lifetime discovery.
Jim Thorpe and Ben Johnson were both banned from the Olympics. But if each had played at different points in history, they would have been allowed to compete.
Nick Lehr/The Conversation
Just about anyone can get a tiny, cheap satellite into orbit these days. As we consider how to deploy them responsibly, inspiration comes from an amateur community of enthusiasts.