A novelette originally published in the Universe Annex of the Grantville Gazette.
On the strongly volcanic and radiation-soaked surface of the moon Io, the smallest mishap means mortal peril, even for artificial humans like Daniel and Oscar. Clones are expendable and easy to re-create. Why then does company boss Eilin Gunnarsson care so much about these young men that she sends them warnings written on the clouds of Jupiter?
Author's website:
http://pattyjansen.com/?p=707
Smashwords:
http://www.smashwords.com/books/view/37282
Amazon:
http://www.amazon.com/dp/B004MME1RA
B & N:
http://www.barnesandnoble.com/w/his-...i=patty+jansen