放大的苔藓(Magnified moss)

你可能会惊讶地发现，这种优雅的植物上点缀着水滴，是各种各样的苔藓——Tortula壁画，俗称壁丝苔藓。它在世界各地都有发现，甚至在城市地区，由于土壤干燥和空气污染，更敏感的苔藓很难生长。一般来说，苔藓是空气污染的精确监测者——它们吸收空气和水，因此污染物也可以在它们的细胞中测量。
原文：
You may be surprised to learn that this elegant plant dappled with water droplets is a variety of moss - Tortula muralis, better known as wall-screw moss. It's found all over the world, even in urban areas where more sensitive mosses have a hard time thriving because of dry soil and air pollution. Mosses in general are accurate monitors of air pollution – they absorb air and water, so contaminants can also be measured in their cells.
《© Arjan Troost/Minden Pictures》