Just as the Cadbury brothers did more than 100 years ago, the programme works on the ground, hand-in-hand with the men and women who grow the essential ingredients used to make Cadbury Dairy Milk chocolates.

Late last year, Eric O’Keefe was researching a mysterious recent purchase of 14,500 acres of prime Washington state farmland. His magazine, The Land Report, tracks major land transactions and produces an annual list of the 100 biggest US landowners.

The 20th century saw numerous large dams built around the world as demand for cheap electricity grew. Yet many of these ageing dams are in such poor state that they are increasingly posing threats to people living downstream from them, says the United Nations.

We have a new open access paper out in the Journal of Modern African Studies – “Medium-scale commercial agriculture in Zimbabwe:

Indigenous fruits have been collected from the wild for centuries for human consumption and other purposes. Across the African continent, indigenous fruit trees are valuable assets for local communities.

Four years ago, Andrés MacGillivray took an unusual decision. He had a high-flying job as a project manager at a pharmaceuticals company in Canada and looked set for a cushy corporate career.