2022-09-16

封面图展示的是孟加拉国的小农场主正在稻田劳作，就像图中所示的锡莱特地区，在过去的30年里，这个人口密集的国家已经从容易发生饥荒变成了一个粮食安全的国家。此种类型的农业依赖于地下水的提取，这是通过季节性很强的降雨提供的地下补给所实现的。这种循环在气候变化的情况下可以维持灌溉粮食生产。

The irrigation of rice fields by smallholder farmers in Bangladesh, like the one in Sylhet pictured here, has transformed this densely populated, once famine-prone land to a food-secure nation over the past three decades. This type of agriculture depends on groundwater withdrawals made possible by subsurface recharge by the highly seasonal rainfall. This cycle sustains irrigated food production under a changing climate.

2022-09-23

封面图展示的是生活在澳大利亚昆士兰北部的白蚁，它们正在木材上寻觅并进食，然后返回它们的巢穴中消化食物。一项在全球范围内重复进行的实验表明，与居住在木材上的微生物相比，以木材为食的白蚁对温度和降水更加敏感。随着气候变暖，白蚁可能会增加全球枯木的回收率，特别是在炎热干燥的地区。

Termites (Microcerotermes sp.) explore and consume wood, digesting it in their mound in Far North Queensland, Australia. A globally replicated experiment revealed that wood-feeding termites are far more sensitive to temperature and precipitation compared with wood-dwelling microbes. As temperatures warm, termites are likely to increase recycling rates of deadwood globally, especially in hot, dry places.

2022-09-30

封面图展示的是在火星上的“毅力号”探测器，从Jezero陨石坑中Séítah地质构造露出地面的岩层处采集了2个岩石样本（位于顶部和底部的小洞）。图中我们还可以看到1个废弃的样本采集点（中间的洞）和1块岩石磨损区（左下凹陷处），以及探测器的行进轨迹和阴影。对Séítah地层的分析表明，它是由液态水改性的火成岩组成的。

Two samples of rock (top and bottom holes) were collected by the Perseverance rover from this outcrop of the Séítah geologic formation in Jezero crater, Mars. Also visible are a discarded sample attempt (middle hole), a rock abrasion patch (lower left depression), and the rover’s tracks and shadow. Analysis of the Séítah formation shows that it consists of igneous rocks modified by liquid water.

2022-10-07

封面图展示了通过艺术手法表现的高尔基体在向细胞溶酶体运输新合成的溶酶体酶。在高尔基体中，LYSET（图中青色部分）保留了GlcNAc-1-磷酸转移酶（紫色），因此它可以利用磷酸甘露糖（发光的黄色斑点）标记溶酶体酶，并将它们转移到溶酶体。2项研究确认并表征了LYSET及其在确保溶酶体酶的高效转运和靶向中的作用。

Artist’s impression of the Golgi as it transports newly synthesized lysosomal enzymes toward the lysosome. In the Golgi, LYSET (cyan) retains GlcNAc-1-phosphotransferase (purple) so that it can tag lysosomal enzymes with mannose-6-phosphate (glowing yellow spots), which routes them onward to the lysosome. Two studies identify and characterize LYSET and its role in ensuring the efficient transport and targeting of lysosomal enzymes.