Three weeks have passed since Russia invaded Ukraine. It is now becoming evident how reliant the European Union is on Russia for oil and gas. That's why alternative sources and new forms of sustainable energy supply will have to be developed even faster.  At the same time, Russia does not only have large fossil fuel reserves, it also has the world's largest forest, by far. It is about 815 million hectares of woodland - almost twice the size of the Brazilian Amazon - and accounts for about 25% of the planet's forests. Now that trade with Russia ...