2018-03-02

封面上展示的是戈帕尔·蒙达尔站在位于孟加拉国的一个人工岛——波尔德32号边缘的陆地上。蒙达尔是波尔德32号甘纳里村中的一位居民，由于河流的侵蚀他们失去了生存的土地。当大自然和人类的力量威胁到我们的家园和生存空间时，韧性——也就是利用各种最有效的方法适应逆境的能力——可以帮助人们及社区支撑下去。

Gopal Mondal stands on the remnants of land at the edge of Polder 32, an artificial island in Bangladesh. Mondal, a resident of Polder 32's Gunari village, lost his land because of river erosion. As natural and human forces threaten homes and livelihoods, resilience—the ability to adapt to adversity, with whatever approach proves most effective—helps people and communities endure.

2018-03-09

封面上是利用数据可视化展示的通过推特传播虚假的（图中橙色部分）及真实的（图中青色部分）新闻报道。长一些的线条代表较长的重重转发，表明虚假新闻传播得更加广泛并且更为深入。本期内容还进一步分析了虚假新闻在数字时代的散播情况。

Data visualization showing the spread of a false (orange) and true (teal) news story through Twitter. Longer lines represent longer retweet cascades, demonstrating the greater breadth and depth at which false news spreads. For further analysis on the dissemination of false news in the digital age.

2018-03-16

封面图展示的是非磁性拓扑绝缘体激光器图示：一个微环谐振器（图中圆形部分）阵列以拓扑方式与导波管（椭圆形部分）耦合在一起。红色的周界描述了激光的拓扑边缘模式，也就是通过两个输出中的一个（实心红色三角形）退出。在一个全电介质半导体中实现这种设计，就能够提高激光的性能，并且可以使许多二极管激光器共同作为一个单独的高度相干激光器工作。

Illustration of a nonmagnetic topological insulator laser: an array of microring resonators (circles) coupled by waveguides (ellipses) in a topological fashion. The red perimeter depicts the lasing topological edge mode, which exits through one of the two outputs (solid red triangle). Implementation of this design in an all-dielectric semiconductor enhances lasing performance and makes many diode lasers operate together as a single highly coherent laser.

2018-03-23

封面图展示的是通过艺术手法描绘的一位正在接受个性化治疗的癌症病人。在新开发的免疫疗法的帮助下，越来越多的患者成为了自己治疗过程中的伙伴。欲了解更多关于癌症免疫疗法的技术及治疗策略，请参阅本期。

Artist's rendering of a patient receiving personalized treatment for cancer. With the help of newly developed immunotherapies, a growing number of patients are partners in their own treatment. For more on techniques and strategies for cancer immunotherapy, see page 1344.■