A new report by Transport & Environment has found that a large proportion of the biofuels promoted by oil companies such as Shell and BP as a low-emission diesel alternatives are being fraudulently labelled as a waste residue from palm oil milling.
Particulate matter contains more harmful substances than we thought
New research has raised questions over the manner in which we have been analysing the component parts of particulate matter, suggesting that the delays in testing samples are allowing a large amount of harmful substances to be missed.