Costa Rica's Turrialba makes ashy mess of airports

In recent days, the Turrialba volcano in Costa Rica has had over 20 significant, ash-rich explosions that have ended up closing airports across the country. Turrialba has been restless for a few years now and occasionally the low-level ash emissions are punctuated by bigger blasts.

But the activity this week has been some of the most vigorous the volcano has seen since it woke up in 2010.

Source: Wired