[nightdriver]

If there was any ammonia in the atmosphere of Mars, the little Viking (?) lab must have missed it and/or it is insignificant.

From the Mars atmospheric data:

Major : Carbon Dioxide (CO2) - 95.32% ; Nitrogen (N2) - 2.7% Argon (Ar) - 1.6%; Oxygen (O2) - 0.13%; Carbon Monoxide (CO) - 0.08%

Minor (ppm): Water (H2O) - 210; Nitrogen Oxide (NO) - 100; Neon (Ne) - 2.5; Hydrogen-Deuterium-Oxygen (HDO) - 0.85; Krypton (Kr) - 0.3; Xenon (Xe) - 0.08

No ammonia is even mentioned.

[arielb]

there's hardly any nitrogen on Mars. Without nitrogen there's no chance of finding ammonia (NH3) or life. Nitrogen makes up about 78% of our air and is part of every protein.
http://pearl1.lanl.gov/periodic/elements/7.html

[Simmy2.5]

*Richard C. Hoagland tinfoil hat on*

Well, it's because they are covering up the TRUTH! Viking DID find Ammonia back then. Just that all those 'evil' MIB NASA strongarm people made sure they keep the TRUTH from us. Covered somewhere is some warehouse. And they are still here keeping the truth from us now! They don't want us to know that there is life on Mars right now! Those 'evil' conspirators!

:-P