Where there's waste there's fertilizer

We all know plants need nutrients, especially nitrogen and phosphorus. To give crops a boost, they are often put on fields as fertilizer. But we never talk about where the nutrients themselves come from.

Three of Tonga's smaller islands badly damaged by tsunami

Three of Tonga's smaller islands suffered serious damage from tsunami waves, officials and the Red Cross said Wednesday, as a wider picture begins to emerge of the destruction caused by the eruption of an undersea volcano ...

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