If this is school work I should try the newscientist pages above. You might get somewhere with Science and Nature. Many societies have web pages and magazines (members only) you could try the royal society for chemistry at
http://www.rsc.org. The institute for physics
http://www.iop.org. The institue of materials minerals and mining at
http://www.iom3.org. The american chemical society is at
http://www.acs.org, the materials research society (american) is at
http://www.mrs.org .......... hope this helps. anything on materials/chemisrty post again and I try to find something more specific for you.