Professional comedians with so-so STEM pedigrees take you through this week in science. Incompetently. Featuring hosts Matt Kirshen, Andy Wood (and sometimes Jesse Case or Brooks Wheelan) along with a rotating cast of special guests from the worlds of comedy and science.
| Title | Date published | ||
| Probably History Episode 002 - Pompeii | 2013-02-28 | ||
| Episode 058 - Jeff Klinger | 2013-02-26 | ||
| Episode 057 - Michael James Nelson | 2013-02-18 | ||
| Episode 056 - David Huntsberger | 2013-02-11 | ||
| Episode 055 - Dr. Peter McGraw | 2013-02-04 | ||
| Episode 054 - Laura House | 2013-01-30 | ||
| Episode 053 - Wil Anderson | 2013-01-21 | ||
| Episode 052 - Dan Telfer and Hannah Gansen | 2013-01-14 | ||
| Probably History Episode 001 - Christmas | 2013-01-11 | ||
| Holiday Bonus Episode with Jesse Case | 2012-12-31 | ||
| Episode 051 - Troy Conrad | 2012-12-17 | ||
| Episode 050 - Kyle Kinane Returns! | 2012-12-10 | ||
| Episode 049 - Tom Sibley | 2012-12-03 | ||
| Episode 048 - Marianne Sierk | 2012-11-26 | ||
| Episode 047 - TJ Miller | 2012-11-19 | ||
| Episode 046 - Taylor Williamson | 2012-11-12 | ||
| Episode 045 - Mike Siegel | 2012-11-05 | ||
| Episode 044 - Chip Pope | 2012-10-29 | ||
| Episode 043 - Josh Cheney and Dax Jordan | 2012-10-22 | ||
| Episode 042 - Emery Emery | 2012-10-14 |