On April 23rd, 2015 at 18:00 UTC the World Expo Challenge will start and last for 8 days.

Please do join in the fun and should you be looking for more information, questions, banter and general merry making please join us <a href="http://www.primegrid.com/forum_thread.php?id=6225&nowrap=true#84942" rel="nofollow">in this thread on the forums.</a>