acoustics Article Climate Change, Security, Sensors Giovanni P. Gregori 1,2,3,4 1 IDASC—Istituto di Acustica e Sensoristica O. M. Corbino (CNR), 00133 Rome, Italy;
[email protected] 2 IEVPC— International Earthquake and Volcano Prediction Center, Orlando, FL 32860, USA 3 IASCC—Institute for Advanced Studies in Climate Change, Aurora, CO 80014, USA 4 ISSO—International Seismic Safety Organization, Headquarters, 64031 Arsita (TE), Italy Received: 16 April 2020; Accepted: 29 June 2020; Published: 3 July 2020 Abstract: A concise threefold illustration is given: (i) of climate change on the gigayear (Ga) time scale through the nanosecond (nsec) time scale, (ii) of the role of the performance of solid materials, concerning both manmade and natural structures with reference to security, and (iii) of the exploitation of the electrostatic energy of the atmospheric electrical circuit—which is an enormous reservoir of natural “clean” energy. Several unfortunate misunderstandings are highlighted that bias the present generally agreed beliefs. The typical natural pace of the Earth’s “electrocardiogram”, ~27.4 Ma, is such that, at present, for the first time humankind must challenge an Earth’s “heartbeat”. A correct use of sensors is needed to get an efficient monitoring of the ongoing climate change. Both anthropic and natural drivers are to be considered. A brief reminder is given about sensors that ought to monitor solid materials—with application (i) to every kind of machinery, building, viaduct or bridge, vehicle, aircraft, rocket, etc. and (ii) for a correct (and unprecedented) monitoring of the electric field at ground, which is the prerequisite for the exploitation of the electrostatic energy of the atmosphere.