| Season Episode: 2x01 |
| Episode: 12 |
| Production Number: 201 |
| Original Air Date: 2009-02-27 |
| Title: Season 2, Episode 1 |
|  |
| Season Episode: 2x02 |
| Episode: 13 |
| Production Number: 202 |
| Original Air Date: 2009-03-06 |
| Title: Season 2, Episode 2 |
| |
| Season Episode: 2x03 |
| Episode: 14 |
| Production Number: 203 |
| Original Air Date: 2009-03-13 |
| Title: Season 2, Episode 3 |
| |
| Season Episode: 2x04 |
| Episode: 15 |
| Production Number: 204 |
| Original Air Date: 2009-03-20 |
| Title: Season 2, Episode 4 |
| |
| Season Episode: 2x05 |
| Episode: 16 |
| Production Number: 205 |
| Original Air Date: 2009-03-27 |
| Title: Season 2, Episode 5 |
| |
| Season Episode: 2x06 |
| Episode: 17 |
| Production Number: 206 |
| Original Air Date: 2009-04-03 |
| Title: Season 2, Episode 6 |
| |
| Season Episode: 2x07 |
| Episode: 18 |
| Production Number: 207 |
| Original Air Date: 2009-04-10 |
| Title: Season 2, Episode 7 |
| |
| Season Episode: 2x08 |
| Episode: 19 |
| Production Number: 208 |
| Original Air Date: 2009-04-17 |
| Title: Season 2, Episode 8 |
| |
| Season Episode: 2x09 |
| Episode: 20 |
| Production Number: 209 |
| Original Air Date: 2009-04-24 |
| Title: Season 2, Episode 9 |
| |
| Season Episode: 2x10 |
| Episode: 21 |
| Production Number: 210 |
| Original Air Date: 2009-05-01 |
| Title: Season 2, Episode 10 |
| |
| Season Episode: 2x11 |
| Episode: 22 |
| Production Number: 211 |
| Original Air Date: 2009-05-08 |
| Title: Season 2, Episode 11 |
| |
| Season Episode: 2x12 |
| Episode: 23 |
| Production Number: 212 |
| Original Air Date: 2009-05-15 |
| Title: Season 2, Episode 12 |
| |
| Season Episode: 2x13 |
| Episode: 24 |
| Production Number: 213 |
| Original Air Date: 2009-05-22 |
| Title: Season 2, Episode 13 |
| |
| Season Episode: 2x14 |
| Episode: 25 |
| Production Number: 214 |
| Original Air Date: 2009-05-29 |
| Title: Season 2, Episode 14 |
| |
| Season Episode: 2x15 |
| Episode: 26 |
| Production Number: 216 |
| Original Air Date: 2009-06-15 |
| Title: Healing the Body |
| |
| |
| |
| Season Episode: 2x18 |
| Episode: 29 |
| Production Number: 220 |
| Original Air Date: 2009-07-13 |
| Title: Artificial Intelligence |
| |
| Season Episode: 2x19 |
| Episode: 30 |
| Production Number: 221 |
| Original Air Date: 2009-07-20 |
| Title: Life in Extreme Places |
| |
| Season Episode: 2x20 |
| Episode: 31 |
| Production Number: 222 |
| Original Air Date: 2009-07-27 |
| Title: Biomimicry |
| |
| Season Episode: 2x23 |
| Episode: 32 |
| Production Number: 223 |
| Original Air Date: 2009-08-03 |
| Title: Substainable Tech |
| |
| Season Episode: 2x24 |
| Episode: 33 |
| Production Number: 224 |
| Original Air Date: 2009-08-10 |
| Title: The Brain |
| |
| Season Episode: 2x25 |
| Episode: 34 |
| Production Number: 225 |
| Original Air Date: 2009-08-17 |
| Title: Science on the Edge |
| |
| Season Episode: 2x26 |
| Episode: 35 |
| Production Number: 226 |
| Original Air Date: 2009-08-24 |
| Title: The Search For Life |
| |
