Colorado-based Sierra Space has successfully completed a test campaign of its new liquid oxygen and liquid hydrogen-fuelled upper stage engine at a US Air Force Base in California. Gurjant Randhawa, ...

Eco-Friendly vehicles have a minimum EPA-estimated mileage of 35 mpg combined and include hybrids, diesels and even a few fuel-sipping gas-only cars. May require specific trim level and/or ...

The technology represents a significant advancement in hydrogen refuelling capabilities, making the process more efficient and practical for all vehicle categories. In practical terms, a 40-tonne ...