Prices for opium in Afghanistan skyrocketed to $750 per kg in 2024, a tenfold increase from $75 for the same amount in 2022 ...

Millions are turning to an unregulated herbal extract to curb their opioid addiction. But do the risks outweigh the benefits?

树叶是自然创作的绚丽诗篇。它们在树梢上轻盈舞动，用多元的姿态和缤纷的色彩，向我们传递物候变化的讯息。我们用树叶搭建房屋、调制药物、营造景观，在它们的色彩变换中慨叹时间的流逝。树叶究竟如何生长？它们为什么会呈现出不同的形状？是什么让松柏四季常青，又让银 ...