The Earth's attraction force
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The Earth's attraction force

by Giuliana Rossi, Ist Naz Ocean Geof Sper -OGS, Trieste, Italy

A sinkhole, in the Classic Karst (near Trieste, close to the border with Slovenia), in a rare walk in the Covid-19 lockdown period. The sense of attraction toward the bottom of the sinkhole is given by the grass, probably below the heavy snow until a few days before...