[en] In these several years, new discoveries have been undertaken in the μCF experiments such as (a) anomalous condensed-matter effect in both molecular formation (D₂, D-T) and μ^- regeneration from the alpha sticking (D-T), (b) high temperature and energetic (tμ) effect in molecular formation (D₂), (c) ortho-para effect in molecular formation (D₂) etc. Also significant progress has been marked in theoretical studies regarding 1) calculation of the loosely bound states of muonic molecules, 2) molecular formation rate in solid D₂ and 3) description of cascade process in muonic atoms. The recent μCF researches open the way to use this phenomenon for construction of the intense 14-MeV neutron source and the effective breeder