As soon as we realize the weather is getting (slightly) warmer and we’re going to be outside a lot more, we also realize that, geez, it’s a real pigsty out there. Although the annual Keep America Beautiful cleanup this weekend was canceled due to severe weather predictions, the die-hards behind Saturday’s 20th Annual Potomac Watershed Cleanup won’t let “possible lightning” stop them. Shannon Macken, with sponsor Alice Ferguson Foundation, sent us an email this morning…