1. Biology, Ecology and Chemistry ; http://www.scientificamerican.com/article/banned-chemical-still-contaminating-san-francisco-seals/
2. Physics: http://www.scientificamerican.com/physics/
3. Social Sciences: http://blogs.scientificamerican.com/anthropology-in-practice/2013/10/31/clowns-zombies-and-luck-even-more-halloween/
4. Math: http://www.scientificamerican.com/article/mighton-how-to-make-kids-love-math/
5. Evolution: http://www.scientificamerican.com/article/tiger-shark-shot-and-dumped-at-sea-as-cull-begins-in-western-australia/