Oct 17, 2002 | SCIENCE
Looking for Carbonates in Dry Places
(Astrobiology Magazine) - A recent discovery may challenge the idea that carbonates could be a sign of past water on other planets.

Aug 14, 2002 | SCIENCE
Continuing Search for Ancient Martian Life
(Astrobiology Magazine) - Researchers have published their latest evidence for ancient microbes in a meteorite from Mars.

May 20, 2002 | SCIENCE
Mars Meteorite's Link to Life Questioned
(Space.com) - A pair of scientists argue that magnetite crystals in a Mars meteorite weren't produced by microorganisms.

Mar 20, 2002 | SCIENCE
No Knockouts in Martian Meteorite Showdown
(Sky and Telescope) - Two teams of scientists argue that magnetite crystals in a Mars meteorite are not necessarily evidence of life.

Jan 07, 2002 | SCIENCE, MISSIONS, TECHNOLOGIES
Signs of Life: On the Lookout for Extraterrestrial Sweet Spots
(Space.com) - A new report reviews methods for detecting extraterrestrial life, and for preventing cross-contamination of planets.

Dec 05, 2001 | SCIENCE, TECHNOLOGIES
Debate Rages on over Evidence of Mars Life in Meteorite
(Spaceflight Now) - Scientists argue the significance of magnetic crystals found inside Martian meteorite ALH 84001.

Aug 29, 2001 | SCIENCE
From Mars to Earth in a Meteorite?
(Scientific American) - A study suggests that the interior of a meteorite from Mars remained cool enough to transport life to Earth.

Jul 11, 2001 | SCIENCE
How Small Can Life Be?
(NASA Astrobiology Institute) - As advanced microscopes enable us to peer deeper into the realms of inner space, biologists have been faced with a vexing question: Is there a size limit on life?

Jul 10, 2001 | SCIENCE
The Meaning of Life
(NASA Astrobiology Institute) - Researchers consider the societal implications of finding life elsewhere in the universe.

Jun 19, 2001 | SCIENCE
Mars Meteorite Discovered in Oman Desert
(CNN) - The meteorite, known as SAU 094, could help determine if life ever existed on Mars.

Feb 26, 2001 | SCIENCE
New evidence of ancient life on Mars
(NASA Astrobiology Institute) - New evidence from a Martian meteorite strengthens the case that microorganisms once existed on Mars.

Dec 13, 2000 | SCIENCE
New report offers evidence of primitive life on Mars
(NASA) - Tiny magnetite crystals, identical to those used by bacteria on Earth, have been found in the Martian meteorite ALH84001.

Mar 01, 2000 | SCIENCE
Sulfur in meteorites offers no evidence of Mars life
(SpaceViews) - Scientists claim that that sulfur concentrations found in Martian meteorites are the result of atmospheric processes and not of life on Mars. Sulfur concentrations may not be an effective biomarker.