Certain neurons encode memories of events that occurred in specific physical locations known as place fields. Chickadees show patterns of neuronal activity that are specific to locations of hidden food but independent of place fields.

Cement can be reused by including it as a component of steel recycling. This opens the way to an industrial partnership that improves the use of materials and lowers carbon emissions — but only if waste resources are well managed.

Neuroscientists find that two distinct neural pathways are responsible for the addictive properties of the opioid fentanyl: one mediates reward, the other promotes the seeking of relief from symptoms of withdrawal.

A phenomenon that affects the magnetic fields of rotating bodies could be involved in recurring changes in the Sun’s behaviour, which are related to a periodic flipping of its field. The proposal is a fresh take on this strange effect.