An inverse cascade explanation for the power-law frequency-area statistics of earthquakes, landslides and wildfires / B.D. Malamud & D.L. Turcotte -- Typical phases of pre-failure damage in granitic rocks under differential compression / X. Lei -- Flow in multiscale fractal fracture networks / P. Davy [and others] -- Crustal stress crises and seismic activity in the Italian peninsula investigated by fractal analysis of acoustic emission, soil exhaustion and seismic data / G. Paparo [and others] -- Crustal stress and seismic activity in the Ionian archipelago as inferred by satellite- and ground-based observations, Kefallinìa, Greece / M. Poscolieri [and others] -- Nonlinear science issues in the dynamics of unstable rock slopes: new tools for rock fall risk assessment and early warnings / J. Zvelebil, M. Palus̆ & D. Novotná -- Multifractal variability in self-potential signals measured in seismic areas / L. Telesca, V. Lapenna & M. Macchiato -- A general landslide distribution applied to a small inventory in Todi, Italy / D.L. Turcotte [and others] -- Scaling properties of the dimensional and spatial characteristics of fault and fracture systems in the Majella Mountain, central Italy / L. Marchegiani [and others] -- Evidence for the existence of a simple relation between earthquake magnitude and the fractal dimension of seismogenic faults: a case study from central Italy / G. Cello, L. Marchegiani & E. Tondi -- Power-law extreme flood frequency / R. Kidson, K.S. Richards & P.A. Carling -- Models, data and mechanisms: quantifying wildfire regimes / J.D. Millington [and others].