http://www.newsweek.com/google-doodle-january-26-who-katarzyna-kobro-art-sculpture-1673010

Polish sculptor Katarzyna Kobro is the subject of Wednesday's Google Doodle, to commemorate what would be her 124th birthday.

Temporary changes like this are often made to the search engine logo, usually to memorialize the anniversary of historic events, celebrate special occasions like the Day of the Dead, or honor people of great cultural significance.