Researchers in Nigeria say water in diesel emulsions could significantly reduce nitrogen oxides and particulate emissions without major engine redesign. The approach may also preserve, and sometimes improve,

Diesel fuel prices surged past $5 a gallon nationwide on Tuesday, with AAA reporting the Med City average remained below that mark at $4.72.

Since the start of the war in Iran, investors have focused almost exclusively on crude oil benchmarks. Yet the most important shock in energy markets may be happening elsewhere — in refined fuels like diesel,

Fuel prices are likely to keep rising until crude oil flows through the Strait of Hormuz return to normal.

The average price for diesel hit $5 per gallon on Monday.

The war with Iran has caused diesel prices to spike nationwide. NPR's Ayesha Rascoe speaks with energy analyst Patrick De Haan about the implications for all the industries that rely on the fuel.

Average petrol station fuel price revealed as diesel reaches 160.3p per litre - The escalating conflict has driven global oil prices

Slovakia is considering regulation to set higher diesel prices at the ​fuel pumps for foreign drivers or ‌limiting their refuelling, Prime Minister Robert Fico said on Tuesday, as the government looks ​to protect against fuel tourism.