點擊科學

2012-05-04

雅各布港冰川（Jakobshavn Isbr）是格陵蘭冰原上速度最快的注出冰川之一，每天從冰川崩裂下來的冰塊、冰山形成了封面上這種獨特的冰峽灣景觀。冰峰寬約5千米，前端高出水面約80米，并延伸至水下超過600米。近期研究表明，格陵蘭冰川的速度在不斷加快。

A jumble of icebergs forms in front of the heavily crevassed calving front of Jakobshavn Isbr, one of the fastest outlet glaciers draining the Greenland Ice Sheet. The～5-kilometer-wide ice front rises ～80 meters out of the water and extends more than 600 meters underwater. Recent research shows that the speeds of Greenland glaciers are increasing.

2012-05-11

封面上是通過NASA曙光號宇宙飛船拍攝到的圖片與地形數(shù)據(jù)整合出的增強色彩圖像，為人們展示了在小行星灶神星上的“雪人”環(huán)形山?？缍燃s為60千米的瑪西亞環(huán)形山（圖片底部）是灶神星上最年輕的大環(huán)形山之一，它有一個小小的中央峰，并且在山體上有深色和淺色的條紋。文中有6篇系列報道詳盡描述了相關(guān)內(nèi)容。

Enhanced-color view of the "Snowman" craters( Marcia,Calpurnia, an d Minucia) on the asteroid Vesta generated by combining imaging and topography data from NASAs Dawn spacecraft. The 60-kilometer-wide Marcia crater(at bottom) is one of the youngest large craters on Vesta with a small central peak, as well as light and dark streaks on its walls.

2012-05-18

現(xiàn)如今，我們對于人與人之間的沖突屢見不鮮，例如2006年8月13日發(fā)生在黎巴嫩貝魯特的爆炸事件，始作俑者就是以色列國防軍，封面圖片就拍攝于爆炸現(xiàn)場。文中的特別章節(jié)，通過檢視沖突的來源、其發(fā)展的歷史軌跡，以及其在現(xiàn)代的表現(xiàn)形式，集中討論了關(guān)于“人際沖突”這個論題。同時，我們也分析了人類自身維系和平的能力，并且審視了那些遠離戰(zhàn)爭的社會是怎樣的。封面圖片只是視覺圖片，并不帶有任何政治內(nèi)容或背景。

We are all too familiar with human conflict, such as this bombing on 13 August 2006 in Beirut, Lebanon, by the Israel Defense Forces. In the special section on Human Conflict, we examine the origins of conflict, trace its path through history, and consider its modern manifestations. We also analyze our innate ability to foster peace and look at societies that eschew war. This cover was chosen for visual imagery and not for any political message or endorsement.

2012-05-25

封面上是通過藝術(shù)渲染的一種電子設(shè)備——馬約拉納費米子虛擬主機。圖中半導(dǎo)體納米線（柱狀構(gòu)造）直徑為100納米，它位于由多個金屬條構(gòu)成的門結(jié)構(gòu)頂部。這條納米線的頂部與1個金制的電極相連，底部與1個超導(dǎo)電極（圖中藍色部分）相連。

Artists rendering of an electronic device hosting Majorana fermions. The semiconducting nanowire (cylindrical structure) has a diameter of 100 nanometers and lies atop a gate structure consisting of many metallic stripes. The nanowire is contacted at the top with a gold electrode and at the bottom with a superconducting electrode (shown in blue).

（陶陶 編譯）