  The paper briefly reviews (i) the evidences for self-similar structures of a
skeletal form (namely, tubules and cartwheels, and their simplest
combinations), called the Universal Skeletal Structures (USS), observed in the
range 10-5 cm - 1023 cm. in the high-current electric discharges in various
fusion devices, severe weather phenomena, and space, (ii) the models for
interpreting the phenomenon of skeletal structures, including the hypothesis
for a fractal condensed matter (FCM), assembled from nanotubular dust, and
(iii) probable role of FCM, which might be responsible for the USS phenomenon,
in tornado, ball lightning, and waterspout.
