5 Things You Need to Know Today: July 28

1. Customers who order fish tacos today at  will receive a "Shark Week fin hat," which will earn them a free taco on Aug. 3 in honor of Discovery Channel's "Shark Week." This editor didn't realize so many people are supposedly into sharks until checking out the hashtag #sharkweek on Twitter.

2. Did you know that, although clear, green and brown glass are recyclable, blue glass is not? This information and more is available on the city's website - a source for up-to-date city guidelines on recycling.

3. On this day in, 1914 World War I began.

4. Today's Featured Facebook page belongs to Jazzercise in Bowie, Greenbelt, and College Park, MD. If the classes are half as energetic as the wall posts here, it seems like it'd be a pretty wicked workout.

5. The forecast calls for a high of 94 degrees between 2 and 3 p.m. with no real chance for rain.