Hydrogen is considered the fuel of the future due to its cleaner nature compared to methane
and gasoline. Therefore, renewable hydrogen production technologies and long-term …

Using an interdisciplinary approach, this paper reviews current knowledge in the field of
natural hydrogen. For the first time, it combines perspectives on hydrogen from the literature …

Abstract Hexavalent chromium (Cr (VI)) is a widespread, toxic contaminant in the
environment. Owing to the increasingly strict requirements for green production and …

Geologic molecular hydrogen (H 2) occurs in the subsurface and vents and seeps at the
surface. However, this valuable natural resource is under-utilized in the economy because …

Over the last 30 years, geochemical research has demonstrated that abiotic methane (CH4),
formed by chemical reactions which do not directly involve organic matter, occurs on Earth in …

Hydrogen, primarily produced from steam methane reforming, plays a crucial role in oil
refining, and provides a solution for the oil and gas industry's long-term energy transition by …

In this introductive chapter, basic concepts concerning natural gas seepage, including the
terminology typically adopted for various types of seepage, the origins of gas (microbial …

Microbial ecosystems can be sustained by hydrogen gas (H2)-producing water–rock
interactions in the Earth's subsurface and at deep ocean vents,,,. Current estimates of global …

Saturn's moon, Enceladus, is a geologically active waterworld. The prevailing paradigm is
that there is a subsurface ocean that erupts to the surface, which leads to the formation of a …

This paper presents a reformulation of the submarine alkaline hydrothermal theory for the
emergence of life in response to recent experimental findings. The theory views life, like …