Biodiversity is in the stars


A new theory has successfully explained the fluctuations in biodiversity. The study found that oscillations of the sun w.r.t the plane of the milky way changes bio-diversity on Earth.
http://sciencenow.sciencemag.org/cgi/content/full/2007/801/1
The original paper findings are available online:
http://arxiv.org/abs/astro-ph/0602092