hydrogen

Green steel production faces a geography problem: low-emission steel is made where renewable energy is cheap, while buyers are often elsewhere. A book-and-claim system, similar to mechanisms used for green hydrogen and renewable power certificates, would let companies purchase the environmental attributes of clean steel produced in one region to support decarbonisation goals even if their physical supply comes from another.

In January 1966, a US Air Force B-52 bomber carrying hydrogen bombs collided mid-air with a KC-135 tanker during refuelling off the coast of Spain, scattering nuclear weapons near Palomares. One bomb fell into the Mediterranean and took 80 days to recover, in one of the most complex search operations of the Cold War. Renewed attention to the accident continues to highlight the risks of nuclear-armed airborne alert missions and the long aftermath of contamination in the area.

Chemists report that the beta-silicon effect enables direct hydrogen atom transfer (HAT) for enantioconvergent couplings of alpha-silyl alcohols. The finding means two different alcohol-derived fragments can be joined efficiently into a single enantioenriched product, a long-standing challenge in synthesis, with the silicon atom steering the reaction pathway. Researchers say the approach could simplify how complex chiral molecules, including potential drug candidates, are built from readily available alcohol starting materials.

Physicists report that Big Bang nucleosynthesis—the primeval formation of the universe's light elements such as hydrogen and helium—has now entered the era of precision cosmology. It is described as the earliest of the Big Bang's four cornerstones, meaning observational measurements of primordial element abundances have become precise enough to test cosmological models alongside tools like the cosmic microwave background.

Zhongtian Hechuang has opened a tender for an electrolysis hydrogen production testing and evaluation center at its Wushenqi wind and solar power hydrogen production project in Inner Mongolia, with an investment of 65.13 million yuan. The project is part of China's expanding green hydrogen build-out, converting renewable power into hydrogen at scale. Industry watchers are tracking progress as a sign of momentum in the country's hydrogen sector.

Researchers are proposing metal-organic frameworks as a way to rethink how liquid hydrogen is stored. The materials, with their highly porous structures, could offer denser and more efficient hydrogen containment than conventional cryogenic tanks. The work is drawing attention amid growing interest in hydrogen as a clean fuel for transport and industry, where storage remains a key technical hurdle.