Brain connections reorganize in distinct stages across life, shaping learning ability and cognitive decline.

Understanding these phases may help explain and treat mental disorders and dementia.

An experiment suggests that the sensitive plant is able to record the number and sequence of events, indicating that learning may be possible even without neurons.

New DESI observations suggest dark energy may change over time, challenging the standard ΛCDM model of the universe.

If confirmed, this could force a major rethink of cosmology and lead to new, more complex theories about how the universe evolves.