1. Life on Mars? Where Do We Stand
By Michael Rigby

2. Terrestrial Surface Differences in hemispheres
Runoff and outflow channels
Permafrost
Large scale flooding
Mars’ Surface

3. Viking Landers Three main experiments: PR, LR, and GEX
Gas Chromatograph/Mass Spectrometer
No organic compounds
VIKING LANDER

4. ALH84001 Meteorite Discovered in 1984 by Allen Hills in Antarctica
Twelve Mars’ meteorites
4.5 million years old

5. Carbonate Globules and Fossil-like Structures
ALH84001 Meteorite
Four pieces of evidence: carbonate globules, PAHs, magnetite globules, and fossil-like structures
Evidence supports ancient bacteria?
Carbonate Globules and Fossil-like Structures

6. Life on Mars? Terrestrial features Viking experiments
ALH84001 Meteorite
New programs and ideas