Two farmers from Northern Ireland and Rwanda share their experiences and build a friendship.
Related stories
EU cities plan to compensate for a fifth of their emissions through carbon removal, but few have thought through how
Monsoon-driven wildfires may have shaped human evolution
Why do people ask so few questions in conversation?
Hidden moth population found after 70 years
From toxic blooms to dead zones, how wildfires transform oceans and lakes
'Squashed poo' a sign of water voles' success