题记：科技的进步改变着我们的世界。在未来的城市中，那些高楼大厦的建筑材料将会是是由微乎其微的球石藻制造的，真是太神奇了！生物生成的石灰石代替开采的石灰石，这是一种自然过程，某些种类的钙质微藻通过光合作用完成（很像建造珊瑚礁）。只有阳光、海水和溶解的二氧化碳，这些微小的球石藻就能产生地球上最多的新碳酸钙，而且速度比珊瑚礁更快。这种由微生物制造的0成本的碳酸钙还是环境友好型的----吸碳和储碳，如果全世界所有以水泥为基础的建筑都被生物石灰石水泥取代，那么每年将不再有高达 20亿吨的二氧化碳被泵入大气中，并且将额外从大气中抽出超过 2.5 亿吨二氧化碳并储存在这些材料之中。这是一项一举多得的技术，不仅可以节省材料成本，还可以改善大气环境。让我们共同期待…………..

Future Cities Could Be Built Out of Algae-Produced Material

未来的城市可以用藻类生产的材料建造

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The scientists cultivated coccolithophores, which create the greatest amounts of new calcium carbonate on the planet, and do so more quickly than coral reefs, using only sunlight, seawater, and dissolved carbon dioxide.


科学家们培育了球石藻，它在地球上产生了最多的新碳酸钙，而且比珊瑚礁更快，只利用阳光、海水和溶解的二氧化碳。

How scientists hope to use algae-grown limestone to build cities
科学家希望如何利用藻类生长的石灰石建造城市

The burning of limestone from quarries contributes significantly to the 7% of the yearly greenhouse gas emissions from the manufacturing of cement worldwide. A research team headed by the University of Colorado in Boulder has discovered a method to use microalgae to absorb carbon dioxide from the atmosphere, making cement production carbon neutral or even carbon negative.

来自采石场的石灰石燃烧占全球水泥制造每年温室气体排放量的 7%。 由位于博尔德的科罗拉多大学领导的一个研究小组发现了一种利用微藻从大气中吸收二氧化碳的方法，使水泥生产成为碳中性甚至是负碳。

The U.S. Department of Energy’s (DOE) Advanced Research Projects Agency-Energy (ARPA-E) has awarded the CU Boulder engineers and their colleagues at the National Renewable Energy Laboratory (NREL) and the Algal Resources Collection at the University of North Carolina Wilmington (UNCW) $3.2 million for their creative work. The research group was recently chosen by the HESTIA program (Harnessing Emissions into Structures Taking Inputs from the Atmosphere) to advance and expand the production of biogenic limestone-based portland cement and contribute to the creation of a zero-carbon future.

美国能源部 (DOE) 高级研究计划署能源 (ARPA-E) 已授予 CU Boulder 工程师及其在国家可再生能源实验室 (NREL) 和北卡罗来纳大学威尔明顿大学藻类资源收藏中心的同事（ UNCW）320 万美元用于他们的创意工作。 该研究小组最近被 HESTIA 计划（利用大气输入的结构排放）选择，以推进和扩大生物石灰石硅酸盐水泥的生产，并为创造零碳未来做出贡献。

“This is a really exciting moment for our team,” said Wil Srubar, lead principal investigator on the project and associate professor in Civil, Environmental, and Architectural Engineering and CU Boulder’s Materials Science and Engineering Program. “For the industry, now is the time to solve this very wicked problem. We believe that we have one of the best solutions, if not the best solution, for the cement and concrete industry to address its carbon problem.”

“这对我们的团队来说是一个非常激动人心的时刻，”该项目的首席研究员、土木、环境和建筑工程副教授以及 CU Boulder 的材料科学与工程项目副教授 Wil Srubar 说。 “对于这个行业来说，现在是解决这个非常棘手的问题的时候了。 我们相信，我们拥有水泥和混凝土行业解决碳问题的最佳解决方案之一，即使不是最佳解决方案。”

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Wil V. Srubar holds a sample cube of (white) biogenic limestone produced by calcifying microalgae, known as coccolithophores. Credit: Glenn Asakawa/University of Colorado
Wil V. Srubar 拿着一个由钙化微藻（称为球石藻）产生的（白色）生物石灰岩样品立方体。 图片来源：Glenn Asakawa/科罗拉多大学
One of the most widespread materials on earth and a foundation of building all across the globe is concrete. It begins as a paste made of water and portland cement, to which components like sand, gravel, or crushed stone are then added. The paste holds the particles together and hardens the mixture into concrete.
混凝土是地球上最广泛使用的材料之一，也是全球建筑的基础。 它最初是由水和波特兰水泥制成的糊状物，然后添加沙子、砾石或碎石等成分。 糊状物将颗粒固定在一起并将混合物硬化成混凝土。
The most popular form of cement, portland cement, is created by removing limestone from large quarries and burning it at high temperatures, which produces a lot of carbon dioxide. The study team discovered a net carbon neutral method of producing portland cement by substituting biologically generated limestone for quarried limestone, a natural process that certain species of calcareous microalgae complete via photosynthesis (much like building coral reefs). In other words, the amount of carbon dioxide that is released into the atmosphere is equivalent to what the microalgae have already captured.
最流行的水泥形式是波特兰水泥，它是通过从大型采石场去除石灰石并在高温下燃烧而制成的，这会产生大量的二氧化碳。 研究小组发现了一种生产波特兰水泥的净碳中和方法，方法是用生物生成的石灰石代替开采的石灰石，这是一种自然过程，某些种类的钙质微藻通过光合作用完成（很像建造珊瑚礁）。 换句话说，释放到大气中的二氧化碳量相当于微藻已经捕获的二氧化碳量。