A new study published in the journal Science of the Total Environment demonstrates the potential of willow tree roots to act as a bio-refinery that filters wastewater and untreated sewage. It is ...

Every year in Canada, six trillion litres of municipal wastewater are partially treated and released into the environment, while another 150 billion litres of untreated sewage are discharged straight ...

Willow trees cultivated for 'green energy' can yield up to five times more biofuel if they grow diagonally, compared with those that are allowed to grow naturally up towards the sky. This effect had ...