They crack and fizzle. They " weep" out additives. They melt into sludge. All of which creates huge headaches for institutions, such as museums, trying to preserve culturally important objects.
When you look at the list each morning, a big fat cloud of doom is right at the top- those difficult, complex, important tasks that are so crucial to get done and so easy to avoid.
Alberto isn't the only weather event that's causing trouble for the U.S. And in a short of period on Sunday, more than nine inches of rain fell on some parts of the eastern state of Maryland.