Windblown iron-rich dust across large regions of the Southern Ocean enhances photosynthesis by phytoplankton and eventually settlement of carbon to the sea floor.

Clusters of about 75 molecules of the membrane protein syntaxin result from weak attraction among the proteins balanced by steric repulsion induced by crowding.

Brain activity in fearful humans occurs in the cognitively advanced prefrontal cortex when the threat is far away but switches to the midbrain as the threat draws near.