Reindeer experience a seasonal change in eye color that enhances their ability to see in dim Arctic light. This adaptation involves a shift in the tapetum lucidum from gold-turquoise in summer to deep blue in winter. The deep blue reflection helps reindeer forage and detect predators in low-light conditions. Changes in collagen fibril spacing within the eye's reflector contribute to this transformation.

A rare pyramid-shaped tomb has been uncovered at Bir Al-Shaghala in Egypt's Dakhla Oasis and dates back to the Roman period. The tomb, built from mud brick, combines Egyptian and Roman architectural styles and includes inscriptions. Among the findings is a Greek funerary poem dedicated to a man named Psychtis, indicating cultural exchanges. Archaeologists also discovered artifacts related to funerary rituals, including an offering table and a bronze coin.