This work, which was published in "Nature," late 2009, after a number of years of analysis, led to the final proposition that we can only find nine planetary boundaries with which, under active stewardship, would allow ourselves to have a safe operating space.
Arbetet publicerades i "Nature"- -i slutet av 2009- -efter år av analyserande som- -ledde till slutsatsen- -att vi bara kan se- -nio planetariska gränser. Inom dem har vi- -ett säkert manövreringsutrymme.