  We review recent developments concerning the weak decay of Lambda
hypernuclei. New studies covering the mesonic decay channel as well as recent
models for the non-mesonic one are discussed and compared with experimental
data. The puzzle of the neutron- to proton-induced decay ratio,
Gamma_n/Gamma_p, is addressed in connection to the two-nucleon induced decay
channel and proposals for more efficient experimental analyses of this ratio
are made.
