Reviews of topical problems

A.M. Fridman “Prediction and discovery of new structures in spiral galaxies” Phys. Usp. 50 115–139 (2007)

A.M. Bykov, I.N. Toptygin “Instabilities of a multicomponent plasma with accelerated particles and magnetic field generation in astrophysical objects” Phys. Usp. 50 141–174 (2007)

V.E. Ostrovskii, E.A. Kadyshevich “Generalized hypothesis of the origin of the living-matter simplest elements, transformation of the Archean atmosphere, and the formation of methane-hydrate deposits” Phys. Usp. 50 175–196 (2007)

E.V. Devyatov “Edge states in the regimes of integer and fractional quantum Hall effects” Phys. Usp. 50 197–218 (2007)

Personalia

V.N. Baier, L.M. Barkov, A.E. Bondar, N.S. Dikanskii, V.F. Dmitriev, M.S. Zolotorev, E.P. Kruglyakov, G.N. Kulipanov, A.N. Skrinskii, V.V. Sokolov, V.S. Fadin, B.V. Chirikov “Iosif Bentsionovich Khriplovich (on his seventieth birthday)” Phys. Usp. 50 219–219 (2007)

E.V. Zakharova “New books on physics and related sciences” Phys. Usp. 50 221–222 (2007)

Physics news on the internet

Yu.N. Eroshenko “Physics news on the Internet” Phys. Usp. 50 223–224 (2007)