Gases like H2, N2, CO2, and CO are increasingly recognized as critical feedstock in “green”
energy conversion and as sources of nitrogen and carbon for the agricultural and chemical …

Two major energy-related problems confront the world in the next 50 years. First, increased
worldwide competition for gradually depleting fossil fuel reserves (derived from past …

Redox reactions play important roles in almost all biological processes, including
photosynthesis and respiration, which are two essential energy processes that sustain all life …

The need to reduce the emission of carbon dioxide into the atmosphere is pushing toward
the use of “renewable carbon”, so to avoid as much as possible burning “fossil carbon”. It …

Molybdenum is the only second-row transition metal required by most living organisms, and
is nearly universally distributed in biology. Enzymes containing molybdenum in their active …

Filamentous enzymes have been found in all domains of life, but the advantage of
filamentation is often elusive. Some anaerobic, autotrophic bacteria have an unusual …

Reduction of oxides and oxoanions of carbon and nitrogen are of great contemporary
importance as they are crucial for a sustainable environment. Substantial research has been …

Dissimilatory sulphate reduction is the unifying and defining trait of sulphate-reducing
prokaryotes (SRP). In their predominant habitats, sulphate-rich marine sediments, SRP have …

Sulfur and selenium occur in proteins as constituents of the amino acids cysteine,
methionine, selenocysteine, and selenomethionine. Recent research underscores that these …

Carbon dioxide (CO2) is a kinetically and thermodynamically stable molecule. It is easily
formed by the oxidation of organic molecules, during combustion or respiration, but is …