蜜芽传媒

David Attenborough walks along a coastal cliff above the Mediterranean Sea on a blazing hot summer day. He talks about Mediterranean plants' adaptations to avoid losing water. The asphodel survives as a bulb. Sage has special summer leaves which have an oil to reduce evaporation. Poterium also has tiny summer leaves and spines. The caper, however, remains green all summer and even flowers. It has enormous suction in its roots to grab all available moisture. To stop its flowers shrivelling in the heat, it blooms at night, and bees arrive at dawn to pollinate it. By midday the flower is dead, so the plant has a sequence of buds along its stem. One flower opens each successive night during the flowering season.