| #1255 | Columbus | Aug 23, 2013 |
| #1254 | Preferred Chat System | Aug 21, 2013 |
| #1253 | Exoplanet Names | Aug 19, 2013 |
| #1252 | Increased Risk | Aug 16, 2013 |
| #1251 | Anti-Glass | Aug 14, 2013 |
| #1250 | Old Accounts | Aug 12, 2013 |
| #1249 | Meteor Showers | Aug 9, 2013 |
| #1248 | Sphere | Aug 7, 2013 |
| #1247 | The Mother of All Suspicious Files | Aug 5, 2013 |
| #1246 | Pale Blue Dot | Aug 2, 2013 |
| #1245 | 10-Day Forecast | Jul 31, 2013 |
| #1244 | Six Words | Jul 29, 2013 |
| #1243 | Snare | Jul 26, 2013 |
| #1242 | Scary Names | Jul 24, 2013 |
| #1241 | Annoying Ringtone Champion | Jul 22, 2013 |
| #1240 | Quantum Mechanics | Jul 19, 2013 |
| #1239 | Social Media | Jul 17, 2013 |
| #1238 | Enlightenment | Jul 15, 2013 |
| #1237 | QR Code | Jul 12, 2013 |
| #1236 | Seashell | Jul 10, 2013 |
| #1235 | Settled | Jul 8, 2013 |
| #1234 | Douglas Engelbart (1925-2013) | Jul 5, 2013 |
| #1233 | Relativity | Jul 3, 2013 |
| #1232 | Realistic Criteria | Jul 1, 2013 |
| #1231 | Habitable Zone | Jun 28, 2013 |
| #1230 | Polar/Cartesian | Jun 26, 2013 |
| #1229 | Screensaver | Jun 24, 2013 |
| #1228 | Prometheus | Jun 21, 2013 |
| #1227 | The Pace of Modern Life | Jun 19, 2013 |
| #1226 | Balloon Internet | Jun 17, 2013 |
| #1225 | Ice Sheets | Jun 14, 2013 |
| #1224 | Council of 300 | Jun 12, 2013 |
| #1223 | Dwarf Fortress | Jun 10, 2013 |
| #1222 | Pastime | Jun 7, 2013 |
| #1221 | Nomenclature | Jun 5, 2013 |
| #1220 | Hipsters | Jun 3, 2013 |
| #1219 | Reports | May 31, 2013 |
| #1218 | Doors of Durin | May 29, 2013 |
| #1217 | Cells | May 27, 2013 |
| #1216 | Sticks and Stones | May 24, 2013 |
| #1215 | Insight | May 22, 2013 |
| #1214 | Geoguessr | May 20, 2013 |
| #1213 | Combination Vision Test | May 17, 2013 |
| #1212 | Interstellar Memes | May 15, 2013 |
| #1211 | Birds and Dinosaurs | May 13, 2013 |
| #1210 | I'm So Random | May 10, 2013 |
| #1209 | Encoding | May 8, 2013 |
| #1208 | Footnote Labyrinths | May 6, 2013 |
| #1207 | AirAware | May 3, 2013 |
| #1206 | Einstein | May 1, 2013 |