links for 2006-03-25

• Tinselman: Impossible Art
  Though Li Wei used to be a painter, he gave that up a few years back for performance art. These are not retouched photos. Each performance takes place in front of a live audience (I added a photo below to demonstrate).
  (tags: art photo)
• ScienceMatters @ Berkeley.
  Every so often, a huge number of species on Earth are wiped out relatively quickly. The last time a large extinction event occurred, between 50,000 and 10,000 years ago, two-thirds of large mammals were swept into the dustbin of history. Why? UC Berkeley
  (tags: evolution science)