The air we take in and the water we drink are not as fresh and clean as they used to be.

我们呼吸的空气和我们喝的水不像以前一样干净。

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In addition to creating the sill, officials are planning to take 2.5 million gallons of fresh water from farther north in the river -- past mile marker 100 -- then carry it by barge southward "and suck it into our water treatment facilities, " Laigast said.

CNN: Salt creeping up the Mississippi River

Discover the beauty of Reach Falls during your included waterfall tour and take a dip in the teal-coloured pools of fresh mountain water.

BBC: Daily deal: Four nights in Jamaica

Furthermore, it is all the more urgent to take action in this domain because 50% of the biodiversity and fresh water of the planet is concentrated in this region of the world.

UNESCO: Social and Human Sciences