New research shows how Mars may have undone its own habitability, while Earth stayed stable enough to support life.

By discovering carbonate rocks, NASA's Mars rovers may have unlocked the key to understanding the fate of the Red Planet's climate.

Algae grown under Mars-like conditions could make bioplastic building materials for structures to harbor life in space.

The NASA-funded system can form building materials with no outside intervention, which could lead to 3D printing in space.