In the American cedar National Park in California, some giant cedars have been standing under this starry sky for nearly 4000 years. They are one of the oldest organisms on Earth and the largest surviving tree in the world. In the 19th century, the local logging industry caused a sharp decrease in the number of giant cedars, but their poor wood prevented them from dying out. Under the influence of law and protection awareness, the situation has improved# Giant cedar#
文案来自@美国国家地理
#科普大作战##涨知识#
发布于 天津
