‘Chemical fingerprint’ shows 46% of wood samples certified as sustainable did not come from labelled country of origin

Nearly half of birch wood certified by leading sustainability schemes is misidentified and does not come from the labelled country of origin, according to new testing. The analysis raises fears that large quantities of sanctioned wood from Russia and Belarus are still illegally entering Britain.

New research by World Forest ID, a consortium of research organisations that includes Kew Gardens and the World Resources Institute, scrutinised the accuracy of dozens of harvesting-origin claims on birch products, which had almost entirely been approved by the Forest Stewardship Council (FSC) and Programme for the Endorsement of Forest Certification (PEFC) sustainability schemes.

Net zero is a target that countries should be striving for to stop the climate crisis. But beyond the buzzword, it is a complex scientific concept – and if we get it wrong, the planet will keep heating.

Biodiversity and environment reporter Patrick Greenfield explains how a loophole in the 2015 Paris climate agreement allows countries to cheat their net zero targets through creative accounting, and how scientists want us to fix it