Summary:This article is about recent movement of Yahoo Photos. Yahoo decided to close its photo service and because of popularity of Filckr which provides photo sharing service
Challanege: To write this kind of article, reporter needs to know a trend of technology and how this change is going to affect other industry and what this change means.
Comparison:
Opinion: I think both of the articles are well-written. I prefer later article,tho.
Title: Wisconsin whooping cranes killed in Florida storms
Summary: This article is reporting about whooping cranes, which is a bird that is endangered to extinct since 1941. Although they were led from south Wisconsin to Florida last fall as a project to protect them, they were killed in storms.
Challenge: The reporter needed to research many studies and did interviews with many experts to cover this report. At least, he/she needed to have basic knowledge about phycology to cover this.
Comparison
Although this article is reporting about same situation, its focus is different from the other one. Former article blamed failed project of protecting birds but later one said environment has caused serious result.
Opinion
Basically they are talking about same event, but their tone and word choice are very different