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Cover of the 1989 photobook <n>Shashinron</n> by <n>Nobuyoshi Araki</n>, with commentary by <n>Takaaki Yoshimoto</n>.

A block of <n>Silica Aerogel</n>, the world's lightest solid material. Photo by <n>NASA/JPL-Caltech</n>.

<n>White Body Fan</n>, a 1972 performance piece by artist <n>Rebecca Horn</n>.

A time-lapse of the slime mold <n>Physarum polycephalum</n> from the <n>Wyss Institute at Harvard University</n>.

A block of <n>Aerogel</n>, the world's lightest solid material. Photo by <n>NASA/JPL-Caltech</n>.