All posts in Knowledge

  • Estonia ranks fifth in Europe in media literacy – analysis

    According to a recent analysis by the Bulgaria-based Open Society Institute, Estonia ranks fifth in…

The trilobite and its compound eye. (A) Holotype. (B) Head region of A. (C) Fields of view. (D) Abraded part of the right eye. Arrowheads indicate the ommatidial columns. (E) Lateral view of the right eye. (F) Schematic drawing of E. (G) Two visual units (big arrows in D). (H) Schematic drawing of G. (Scale bars: A–C, 1 cm; D, 1 mm; E and F, 2 mm; and G, 200 μm.) Photo: National Academy of Sciences