Climate modelers go back in time to simulate past Snowball Earth conditions and find that complete freeze-over is hard to achieve.

O ambiente físico pode produzir choques repentinos para a vida do nosso planeta através do impacto de rochas espaciais, vulcões em erupção e outros eventos.

The discovery of ancient lake deposits in the driest part of the Saharan Desert confirms that the region was wetter in its past.

A recent diving expedition provides a closer look at some South Pacific hydrothermal vents where the precursors to life may have gotten their start.

Methanogens behind largest extinction event in Earth's history. Teaser: The cause of the most devastating mass extinction known to scientists may have been a lowly little microbe who changed its eating habits.

Wind and dust conditions in Sub-Saharan Africa Africa can help predict a meningitis epidemic.

Researchers are collecting together data on photosynthetic pigments from Earth to help imagine the colors of life on other planets.

Previous studies suggested that planets in the habitable zone of red dwarfs should be dry, but more recent work refreshes the possibility of water on these distant worlds.

The Lewis and Clark Fund for Exploration and Field Research in Astrobiology fosters the "pioneering" efforts of graduate students and post-doctorate researchers as they step out of the lab and into the field.

Genomic studies consistently show that all life on Earth is related, but our earliest ancestors may not have evolved in the same way we do now.