links for 2007-04-22

• What time is dinner?
  (tags: diet food history sociology culture meals europe)
• IEEE Communication Society Tutorials
  (tags: Education ieee communications tutorials)
• How to Make Gmail/Gcal Rock Your Tasks - lifehack.org
  (tags: gtd productivity greasemonkey scripts lifehacks software)
• WIKISKY.ORG
  (tags: astronomy maps space visualization Science)