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- 1Canadian telescope maps earliest hydrogen glow of universe▼Canadian telescope directly maps earliest glow of hydrogen, opening a new window on the universe
A Canadian telescope has for the first time directly mapped the earliest glow of hydrogen in the universe, according to an announcement from researchers at the University of British Columbia. The result, reported through EurekAlert! and UBC science communications, opens what researchers describe as a new observational window on the early cosmos, allowing astronomers to study the epoch when the first hydrogen gas filled the universe.
- 2Green Steel's Geography Problem Meets a Book-and-Claim Fix▼Green Steel’s Geography Problem Meets a Book-and-Claim Fixes
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.
- 3Silicon effect enables new route for chiral alcohol couplings▼β-Silicon effect enables direct HAT for enantioconvergent couplings of α-silyl alcohols [IMAGE]
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.