Preface; On the Relationship between Solar Activity and Forest Fires; Statistical Characteristics of the Heliospheric Plasma and Magnetic Field at the Earth's Orbit during Four Solar Cycles 20-23; Solar Energy Research, Sustainable Development and Applications; Experimental and Modeling Evidences of the Solar Wind Energy Influence on the Earth Atmosphere; Solar Wind and Motion of Interplanetary Dust Grains; A Role of the Solar Wind in Dynamics of Interstellar Dust in the Solar System; Solar Wind, Large Diamagnetic Cavities, and Energetic Particles; Solar Wind Interaction with Artificial Atmospheres; Electrostatic Wind Propulsion; Solar Radiation over Dongola, Northern Sudan; Electrostatic Solar Light - Wind Sail; AB - Solar and Solar Wind Sail; Electrostatic Magsail; The 27-Day Periodicity in Geomagnetic Activity and Solar Wind Parameters over Solar Cycle 23; On the Limits of Applicability of the Ray Interference Integral Method for Calculations of the Temporal Structure of Solar Radio Bursts; Index.