STICKY SITUATION

Prepare for some gooey fun with nature. Learn how to choose just the right tree for a sweet treat. Then collect sap and boil it down to make syrup. Watch it transform into sugar over fire and sample maple candy.

  • 2-4 p.m. Sun. 3/11
  • $2
  • Historic Pond House, 401 E. 104th St., Bloomington
  • 952-563-8738

MarsCon

In line with the alleged end of the world, the theme for this science-fiction and fantasy convention is "Rockin' the Apocalypse." Fans will be treated to films, discussions and music. Celebrity guests include authors Catherine Asaro and Rob Callahan and actress Claudia Christian.

  • 4 p.m. Fri. 3/9; 8 a.m. Sat.-Sun. 3/10-11
  • $20-$60
  • Crowne Plaza Hotel, 3 Appletree Square, Bloomington
  • www.marscon.org