"Green hydrogen" uses renewable energy, while "blue hydrogen" relies on fossil fuels such as coal and gas, with carbon-capture technology to reduce emissions. "Brown hydrogen" is produced by ...

Global assessments of the climate change mitigation potential of biochar diverge, and many rely on a dated analysis, but there is strong evidence for gigaton-scale contribution, concludes a ...

The antimatter counterpart to the simplest atom, hydrogen, is a neutral antihydrogen atom ... Any antiprotons passing close enough to heavy atomic nuclei could create an electron-positron pair; in a ...