How artificial riverbanks save the sand martin

How artificial riverbanks save the sand martin

In springtime, a friend sits under a tree beside Pen Pond in London’s Richmond Park and through her binoculars plays what she calls sand martin bingo. This involves recording the birds’ darting flights in and out of the rows of nesting burrows in an artificial...
Converting invasive plants to cash

Converting invasive plants to cash

Gideon Kondjeni makes high-quality charcoal from thorny Acacia trees invading his farm in central Namibia.  He sends it six thousand miles north to Europe and Scandinavia where Kurdish and Indian restaurants depend on his artisanal fuel to keep their traditional ovens...