Lengthy periods of droughts scourge Europe, weakening the forests and thus hampering the CO₂ absorption. There is an increasing risk of forest fires and plagues, which threaten the diversity of flora and fauna. Wageningen researchers and forest managers collaborate in testing what trees are best able to cope with dry conditions and absorb CO₂most effectively. Thus, their expertise contributes to healthy, climate-proof forests in the Netherlands and the rest of Europe. Planting trees for the climate, a good idea?