| #2214 | Chemistry Nobel | Oct 11, 2019 |
| #2213 | How Old | Oct 9, 2019 |
| #2212 | Cell Phone Functions | Oct 7, 2019 |
| #2211 | Hours Before Departure | Oct 4, 2019 |
| #2210 | College Athletes | Oct 2, 2019 |
| #2209 | Fresh Pears | Sep 30, 2019 |
| #2208 | Drone Fishing | Sep 27, 2019 |
| #2207 | Math Work | Sep 25, 2019 |
| #2206 | Mavis Beacon | Sep 23, 2019 |
| #2205 | Types of Approximation | Sep 20, 2019 |
| #2204 | Ksp 2 | Sep 18, 2019 |
| #2203 | Prescience | Sep 16, 2019 |
| #2202 | Earth-Like Exoplanet | Sep 13, 2019 |
| #2201 | Foucault Pendulum | Sep 11, 2019 |
| #2200 | Unreachable State | Sep 9, 2019 |
| #2199 | Cryptic Wifi Networks | Sep 6, 2019 |
| #2198 | Throw | Sep 3, 2019 |
| #2197 | Game Show | Sep 2, 2019 |
| #2196 | Nice To E-Meet You | Aug 30, 2019 |
| #2195 | Dockless Roombas | Aug 28, 2019 |
| #2194 | How to Send a File | Aug 26, 2019 |
| #2193 | Well-Ordering Principle | Aug 23, 2019 |
| #2192 | Review | Aug 21, 2019 |
| #2191 | Conference Question | Aug 19, 2019 |
| #2190 | Serena Versus the Drones | Aug 16, 2019 |
| #2189 | Old Game Worlds | Aug 14, 2019 |
| #2188 | E Scooters | Aug 12, 2019 |
| #2187 | Geologic Time | Aug 9, 2019 |
| #2186 | Dark Matter | Aug 7, 2019 |
| #2185 | Cumulonimbus | Aug 5, 2019 |
| #2184 | Unpopular Opinions | Aug 2, 2019 |
| #2183 | Icon Swap | Jul 31, 2019 |
| #2182 | When I'm Back at a Keyboard | Jul 29, 2019 |
| #2181 | Inbox | Jul 26, 2019 |
| #2180 | Spreadsheets | Jul 24, 2019 |
| #2179 | NWS Warnings | Jul 22, 2019 |
| #2178 | Expiration Date High Score | Jul 19, 2019 |
| #2177 | Gastroenterology | Jul 17, 2019 |
| #2176 | How Hacking Works | Jul 15, 2019 |
| #2175 | Flag Interpretation | Jul 12, 2019 |
| #2174 | First News Memory | Jul 10, 2019 |
| #2173 | Trained a Neural Net | Jul 8, 2019 |
| #2172 | Lunar Cycles | Jul 5, 2019 |
| #2171 | Shadow Biosphere | Jul 3, 2019 |
| #2170 | Coordinate Precision | Jul 1, 2019 |
| #2169 | Predictive Models | Jun 28, 2019 |
| #2168 | Reading in the Original | Jun 26, 2019 |
| #2167 | Motivated Reasoning Olympics | Jun 24, 2019 |
| #2166 | Stack | Jun 21, 2019 |
| #2165 | Millennials | Jun 19, 2019 |