Drought conditions during most of the 21st century have forced water managers to plan for a day when the region's vast system of DAMS and reservoirs no longer have enough water to store.

21世纪大部分时间都是干旱条件的状况迫使水资源的管理者开始计划当该地区庞大的水坝和水库系统没有足够的水去储存时的打算。

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The Smart Home, created by EnergyAustralia and Sydney water, showcases the latest energy and water solutions to help communities face the challenges of the 21st century.

由悉尼水务和澳大利亚电力公司打造的智能家居展示了最新的水利能源使用方案，以帮助社区居民面对21世纪的挑战。

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The proportion of people living in countries chronically short of water, which stood at 8% (500m) at the turn of the 21st century, is set to rise to 45% (4 billion) by 2050.

本世纪初，生活在慢性缺水的国度中的人口占到了8%（5亿），到2050年受波及的人口将扩大到45%（40亿）。

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Given that water could well become the oil of the 21st century, that's not a bad idea at all.

FORBES: The Story Of Eau

The school's distinguished faculty are leading research to address many of the critical challenges of the 21st century, including renewable energy, clean water, health care, wireless sensing and networking, and cybersecurity.

ENGADGET: Photovoltaic polarizers could make self-charging smartphone dreams come true