Too many mouths

Vision.org commentator David Hulme discusses one of the most imminent of global threats, in this compelling video. 

What we're doing to our Planet

25 years ago scientists issued a stern warning to humanity about our impact on the Earth and its life-supporting resources. This paper updates the warning and looks at what we have done since. 

The nitrogen crisis: can we solve it?

Yale Environment, Fred Pearce: More and more nitrogen keeps pouring into waterways, unleashing algal blooms and creating dead zones.

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