GeoLog

oxygen

Geosciences Column: The quest for life on Mars

Laura Roberts-Artal February 20, 2015

Jarosite deposits on Mars. Image Credit: NASA/JPL/University of Arizona

Understanding where we come from and whether Earth is the only habitable planet in the Solar System has been a long standing conundrum in science. Partly because it is our nearest neighbour, partly because of its past and current similarities with our own home, Mars, the red planet, is a likely contender in the quest for extra-terrestrial life. In this guest blog post, James Lewis, a PhD student a ...[Read More]

Geosciences Column: Shifting the O in H2O

Sara Mynott February 28, 2014

Wherever you are in the world’s oceans, you can identify particular bodies of water (provided you have the right equipment) by how salty they are. You can get a feel for how productive that part of the ocean is by measuring a few chemical components in the water column. And, year on year, you will see a recurring pattern in how things like temperature, salinity and oxygen content vary with depth. ...[Read More]