Free Speculative Fiction Online 
(Aeon #6, March 2006)
Isfdb: 
(Jim Baen's Universe Vol. 1 No. 1, June 2006)
. Also available on a freely distributable CD. Isfdb:
(Jim Baen's Universe Vol. 1 No. 4, December 2006). Also available on a freely distributable CD. Isfdb:
(Nature #449, September 2007)
.
(Abyss & Apex #27, Third Quarter 2008)
(Jim Baen's Universe Vol. 3 No. 1, June 2008)
(Jim Baen's Universe Vol. 3 No. 4, December 2008)
(Futurismic, February 2009)
(Jim Baen's Universe Vol. 4 No. 2, August 2009)
(Nature #461, October 2009)
(Clarkesworld #39, December 2009)
(Beneath Ceaseless Skies #46, July 2010)
. 
Isfdb:
(Andromeda Spaceways #49, 2011)
(Analog, January 2011) Isfdb:
(Nature #471, March 2011)
(Beneath Ceaseless Skies #76, August 2011). Available as part of this magazine. Isfdb:
(Beneath Ceaseless Skies #86, January 2012). Isfdb:
(Lightspeed, January 2012). Isfdb:
(Tor.com, February 2012) Isfdb:
Alec Austin: On the Weaponization of Flora and Fauna (Beneath Ceaseless Skies #129, September 2012).
(Beneath Ceaseless Skies #105, October 2012). Available as part of this magazine. Isfdb:
(Beneath Ceaseless Skies #117, March 2013). Alternate link. Isfdb:
. Isfdb:
(Tor.com, July 2013) Isfdb:
(Nature #503, November 2013)
(Strange Horizons, February 2014) Isfdb:
(Apex Magazine #61, June 2014) Isfdb:
(Nature #510, June 2014)
(Apex Magazine, November 2014)
(Nature #515, November 2014)
(Beneath Ceaseless Skies #162, December 2014). Isfdb:
(Lightspeed, March 2015) Isfdb:
(Analog, March 2015) Isfdb:
(Beneath Ceaseless Skies #173, May 2015). Isfdb:
(Strange Horizons, July 2015) Isfdb:
(Nature #526, October 2015)
(Tor.com, November 2015). Isfdb:
(Nature #538, October 2016)
(Beneath Ceaseless Skies #218, February 2017). Alternate link. Isfdb:
(Nature #544, May 2017)
(Beneath Ceaseless Skies #233, August 2017). Isfdb:
(Nature #549, September 2017)
(Beneath Ceaseless Skies #237, October 2017). Isfdb:
(Uncanny Magazine #20, January 2018) Isfdb:
(Nature #554, February 2018)
(Fireside, March 2018)
(Nature #556, April 2018)
(Analog, July 2018) Isfdb:
(Nature #563, November 2018)
(Uncanny Magazine, January 2019)
(Beneath Ceaseless Skies #269, January 2019) Isfdb:
(Nature #571, July 2019)
(Nature Futures, November 2019)
(Beneath Ceaseless Skies #295, January 2020) Isfdb:
(Nature Futures, July 2020)
(Beneath Ceaseless Skies #311, August 2020) Isfdb:
(Nature Futures, September 2020)
(Asimov's, November 2020) Isfdb:
(Uncanny Magazine #38, January 2021) Isfdb:
(Fantasy Magazine, January 2021)
(Nature Futures, February 2021)
(Nature Futures, June 2021)
(Flash Fiction Online, July 2021) Isfdb:
(Nature Futures, October 2021)
(Nature Futures, November 2021)
(Deadlands #8, December 2021)
(Clarkesworld #185, February 2022) Isfdb:
(Nature Futures, April 2022)
(Beneath Ceaseless Skies #356, May 2022) Isfdb:
(Asimov's, September 2022) Isfdb:
(Nature Futures, December 2022)
(Nature Futures, April 2023)
(Nature Futures, August 2023)
(Uncanny Magazine #55, November 2023)
(Lightspeed, March 2024)
(Lightspeed, May 2024)
(Beneath Ceaseless Skies #406, May 2024)
(Nature Futures, August 2024)
(Clarkesworld #216, September 2024)
(Uncanny Magazine #60, September 2024)
(Beneath Ceaseless Skies #418, October 2024)
(Uncanny Magazine #61, November 2024)
(Nature Futures, December 2024)