Abstract: All over the world regulation of carbon emission is being reinforced. Therefore, the research is actively underway to use a hydrogen fuel cell, which has high energy efficiency and ...

Ukraine war latest: Kremlin threatens foreign fighters in Ukraine after Moscow's troops 'hear them on frontline' The Kremlin claims its troops are constantly hearing foreigners on the frontline.

Kyiv and Moscow have offered contrasting responses after Donald Trump imposed sanctions on Russia's biggest oil firms in a major shift of policy. Meanwhile, NATO jets are scrambled after Russian ...