s-and-p added two. the cold weather in chicago this past winter has delayed the opening of a bike and pedestrian trail. the 606, also known as the bloomingdale trail, is being built on top of an old elevated railway. when it's complete, it will stretch nearly 3-miles along bloomingdale avenue on the northwest side ... and connect four chicago communities. it was supposed to be ready this fall. now it won't open until june of next year, because crews could not break through the frozen ground. >> it makes it harder to work with the structures that we are trying to fix. it slows utility relocation and frankly, it slows the ability to people to work safely on the site when you're working in as temperatures. >>and, a sixth ground-level park has just been added to the project. it's being built on the site of an old glove factory in logan square. project managers are asking for the community's help designing the 4-acre park. there will be a meeting about it tomorrow. if you're slicing wedges from a round cake, you're doing it all wrong. that's according to a british math scientist.. who revealed a scientific way to do it 100 years ago. the problem