Volcanoes are the worst. They've caused extinctions on Earth, and probably killed Venus

Is there anything good about volcanoes? They can be violent, dangerous, and unpredictable. For modern humans, volcanoes are mostly an inconvenience, sometimes an intriguing visual display, and occasionally deadly. But when there’s enough of them, and when they’re powerful and prolonged, they can kill the planet that hosts them. Modern-day Venus is a blistering hellscape. …