While individual vessels have minimal impact, in high concentration they could pose threat to the environment.

Scientists examining if unique enzyme could enable conversion of biomass into fuels.

Guidelines promote removing older vessels from service and reducing illegal demolition.

Sustainable Shipping poll shows industry believe clean fuels and scrubbing technology offer the greatest benefits.

Retail giant on road to sustainability, cooperative approach will cut carbon and costs for all those involved.

Trieste port's decision to accept no exemptions said to have followed advice from ministry.

Danish Shipowners' Association chairman says the maritime industry is dependent on research and development.

Problems anticipated with improperly planned fuel switching procedures and sustained operation.