STEEL versus LEX LUTHOR
Man Ain't Nothing But a Man (DC comics)
Where: 52 #42 When: April 2007
Why: Geoff Johns, Grant Morrison, Greg Rucka & Mark Waid How: Keith Giffen & Chris Batista
The story so far...
Lex Luthor's everyman project appears to have discovered means of granting normal human beings fantastic powers through the use of an injectable meta-gene therapy.
The only side effects appear to be the development of superpowers, and in the case of John Henry Irons, the armored hero once called Steel, this means literally becoming a man of steel.
When his powers begin to dissipate, Irons realises Luthor's meta-gene not only has finite potential, but also a potential 'off-switch', which leads to the deaths of several experiment subjects. Thus, Irons shrugs off a bitter depression, and dons the Steel armor once more to confront the evil Lex Luthor.
Full Article: http://secretearths.blogspot.com/2007/03/steel-versus-lex-luthor-man-aint.html