European Synchrotron Radiation Facility

Direct Detection of Hydrogen Reveals a New Macroscopic Crustal Water Reservoir on Early Mars

Abstract The next great leap in Martian exploration is the return of samples to Earth. Maximizing their scientific value requires non‐destructive analytical techniques for early three‐dimensional characterization. Neutron computed tomography (CT), highly sensitive to hydrogen, co...

Compartmentalization of metals for photosynthesis and nitrogen fixation in specialized cells of the filamentous cyanobacterium Anabaena sp. PCC7120

Nitrogen fixing cyanobacteria, such as Anabaena sp. PCC7120, are some of the oldest multicellular organisms. When combined nitrogen sources are scarce, this cyanobacterium compartmentalizes photosynthesis and nitrogen fixation in vegetative cells and in differentiated heterocysts...