From the wonderful radio program Quirks & Quarks:
Despite what you may think, the universe is not necessarily a friendly place. Sure, things here on Earth have been pretty stable over the past few millennia, allowing human civilization to gain a foothold. But that could change at any time. Disaster lurks everywhere, from the deepest reaches of space to the very bowels of our planet. We've recruited nine prominent Canadian scientists (and one science fiction writer) and asked them to imagine how they think the world might end. We bring you The Quirks & Quarks Guide to the End of the World -- it's cataclysmically fun!
Our top ten list of civilization-destroying events:
1. Dr. Ray Jayawardhana, Canada Research Chair in Observational Astrophysics at the University of Toronto, explains what will happen when the expanding sun engulfs the earth and roasts the planet.
2. Dr. Vicki Kaspi, a Professor of Physics at McGill University, explores the irradiating effects of a giant gamma ray burst.
3. Dr. Laura Ferrarese, a Senior Researcher at the Herzberg Institute of Astrophysics in Victoria, suggests that a rogue black hole may set its voracious appetite on Earth.
Hat tip: The ever-valuable Knight Science Journalism Tracker