| #1521 | Sword in the Stone | May 6, 2015 |
| #1520 | Degree-Off | May 4, 2015 |
| #1519 | Venus | May 1, 2015 |
| #1518 | Typical Morning Routine | Apr 29, 2015 |
| #1517 | Spectroscopy | Apr 27, 2015 |
| #1516 | Win by Induction | Apr 24, 2015 |
| #1515 | Basketball Earth | Apr 22, 2015 |
| #1514 | PermaCal | Apr 20, 2015 |
| #1513 | Code Quality | Apr 17, 2015 |
| #1512 | Horoscopes | Apr 15, 2015 |
| #1511 | Spice Girl | Apr 13, 2015 |
| #1510 | Napoleon | Apr 10, 2015 |
| #1509 | Scenery Cheat Sheet | Apr 8, 2015 |
| #1508 | Operating Systems | Apr 6, 2015 |
| #1507 | Metaball | Apr 3, 2015 |
| #1506 | xkcloud | Apr 1, 2015 |
| #1505 | Ontological Argument | Mar 30, 2015 |
| #1504 | Opportunity | Mar 27, 2015 |
| #1503 | Squirrel Plan | Mar 25, 2015 |
| #1502 | Wasted Time | Mar 23, 2015 |
| #1501 | Mysteries | Mar 20, 2015 |
| #1500 | Upside-Down Map | Mar 18, 2015 |
| #1499 | Arbitrage | Mar 16, 2015 |
| #1498 | Terry Pratchett | Mar 13, 2015 |
| #1497 | New Products | Mar 11, 2015 |
| #1496 | Art Project | Mar 9, 2015 |
| #1495 | Hard Reboot | Mar 6, 2015 |
| #1494 | Insurance | Mar 4, 2015 |
| #1493 | Meeting | Mar 2, 2015 |
| #1492 | Dress Color | Feb 27, 2015 |
| #1491 | Stories of the Past and Future | Feb 25, 2015 |
| #1490 | Atoms | Feb 23, 2015 |
| #1489 | Fundamental Forces | Feb 20, 2015 |
| #1488 | Flowcharts | Feb 18, 2015 |
| #1487 | Tornado | Feb 16, 2015 |
| #1486 | Vacuum | Feb 13, 2015 |
| #1485 | Friendship | Feb 11, 2015 |
| #1484 | Apollo Speeches | Feb 9, 2015 |
| #1483 | Quotative Like | Feb 6, 2015 |
| #1482 | #NowPlaying | Feb 4, 2015 |
| #1481 | API | Feb 2, 2015 |
| #1480 | Super Bowl | Jan 30, 2015 |
| #1479 | Troubleshooting | Jan 28, 2015 |
| #1478 | P-Values | Jan 26, 2015 |
| #1477 | Star Wars | Jan 23, 2015 |
| #1476 | Ceres | Jan 21, 2015 |
| #1475 | Technically | Jan 19, 2015 |
| #1474 | Screws | Jan 16, 2015 |
| #1473 | Location Sharing | Jan 14, 2015 |
| #1472 | Geography | Jan 12, 2015 |