On the very bad day in question, one particular volcano, now known as Mount Toba, had been active for a long time. It had bulged up gradually until it towered almost 3,000 feet above the jungle.

Near-Earth asteroid Bennu has a slim chance of colliding with Earth in 2182. If it does, the impact could trigger a global ...

For example, somewhere around 71,000 to 74,000 years ago Mount Toba, located in modern-day Indonesia, erupted in a supervolcano thought to be the largest in human history. The eruption was two ...