The ground upon which we walk is the basis of our existence. It serves as a bed for our fruit and vegetables, it filters water and accommodates countless creatures. But what state is our ground really in?
The African Development Bank has proposed developing the continent's 400 million hectares of cultivatable savanna lands, but guest writers Sam Dindi and Esther Ngumbi explain the potential environmental impact.
We must wean ourselves off unsustainable economic growth if we are to cut greenhouse gas emissions and avoid catastrophic climate change, say some economists. But what are the alternatives to growth?
Terrorism and climate change are widely considered as the two most significant threats of our time, but what few realize is to what extent the two are connected.
Whether as tofu or through meat, we all eat a lot of soy. To ensure future cultivation of the bean in Germany, scientists are trying to harden it against the cold.
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