Science Articles Anyone?

I joined this online mentorship program offered by UCSC earlier in the year, and one of the tasks they are asking me to complete this semester is an activity involving a science article (or articles). Since we've been working on habitats and their effects on civilizations and organisms, I was hoping to find an article that dealt with that topic on some level. Alas, I have been unable to do so thus far. I seem to remember some news about frogs dying out in massive numbers across Africa for some reason, and how it was an indicator of bad things to come since frogs are so sensitive to changes in their environment, but I haven't been able to find the article itself to give to my students. If anyone out there comes across a good article on this topic that my students might enjoy, please pass it along. Thanks -Mr. H