<link http: www.scientificamerican.com _blank external-link-new-window>Hunt for Life under Antarctic Ice Heats Up (Scientific American, 2012/11/21)

<link http: www.maxisciences.com fossile un-ocean-toxique-pourrait-avoir-cause-l-039-extinction-du-devonien-il-y-a-380-ma_art27589.html _blank external-link-new-window>Un océan toxique pourrait avoir causé l'extinction du Dévonien, il y a 380 Ma (Maxisciences, 2012/11/20)

On line availability of articles depends on the Newspaper/magazine. We can't thus certify that above articles will be freely and permanently available.