2 - 1Caves, Chemistry, and Crickets Jan. 02, 2021- 2 - 2Foragers, Filter Feeders, and Phones Jan. 09, 2021
- 2 - 3Speech and Space Suits, Beetles and Bursts Jan. 16, 2021
- 2 - 4Physics, Flames, and Funnels Jan. 23, 2021
- 2 - 5Construction, Clouds and Climate Jan. 30, 2021
- 2 - 6Birds, Biomes, and Bitey Feb. 06, 2021
- 2 - 7Microbes, Metals, and Museums Feb. 13, 2021
- 2 - 8Make-Up, Medicine Delivery, and Milk Fireworks Feb. 20, 2021
- 2 - 9Extraction, Electricity, and Engineering Feb. 27, 2021
- 2 - 10Resting Repairing and Roasting Jan. 01, 1970
- 2 - 11Darling Whales, Dry Deserts, and Do-It Yourself Science Apr. 17, 2021
- 2 - 12Combat, Chemistry, and Communication Apr. 24, 2021
- 2 - 13Crickets, Cakes, and Crawlers May. 01, 2021
- 2 - 14Friction, Flurries, and Foliage May. 08, 2021
- 2 - 15
- 2 - 16Astronomy, Aquariums and Artificial Heart May. 22, 2021
- 2 - 17Super Stars, Savvy Screens and Sensory Robots May. 29, 2021
- 2 - 18Landscape, Seascape, Mindscape Jul. 03, 2021
- 2 - 19Snow, Snakes and Sports Science Jul. 10, 2021
- 2 - 20Printing, Planting and Popularity Jul. 17, 2021
- 2 - 21Trekky, Tricky and Tasty Jul. 10, 2021
- 2 - 22Your Brain, Your Breath and Your Blow Dryer Jul. 31, 2021
- 2 - 23Artifacts, Attraction, and Aurora Borealis Aug. 07, 2021
- 2 - 24
- 2 - 25Forgeries, Frequencies and Phenolphthalein Aug. 21, 2021
- 2 - 26Best of — Biology, Buds, and Brains Aug. 28, 2021