Main Page

Today's featured picture

Carol W. Greider

Carol W. Greider (born April 15, 1961) is an American molecular biologist. She completed her PhD in 1987 at the University of California, Berkeley, under Elizabeth Blackburn. Their research focused on telomeres, with which the ends of chromosomes are tipped, and they discovered the enzyme telomerase which replenishes the tips and determines the life span of the cell. For these discoveries, she shared the 2009 Nobel Prize in Physiology or Medicine with Blackburn and Jack W. Szostak.

Photograph credit: Keith Weller; edited by Adam Curden

Other areas of Wikipedia

  • Community portal – Bulletin board, projects, resources and activities covering a wide range of Wikipedia areas.
  • Help desk – Ask questions about using Wikipedia.
  • Local embassy – For Wikipedia-related communication in languages other than English.
  • Reference desk – Serving as virtual librarians, Wikipedia volunteers tackle your questions on a wide range of subjects.
  • Site news – Announcements, updates, articles and press releases on Wikipedia and the Wikimedia Foundation.
  • Village pump – For discussions about Wikipedia itself, including areas for technical issues and policies.

Wikipedia's sister projects

Wikipedia is hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other projects:

Wikipedia languages

This page is based on a Wikipedia article written by contributors (read/edit). Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses. Cover photo is available under CC BY 2.0 license.