‘Starter packs’—curated user lists that new users can follow with a single click—played a key role in helping Bluesky grow to over 30 million users, according to a new study.

B₄C–TiB₂ composite ceramics, with their unique integrated design of structure and function, have demonstrated remarkable potential in extreme environments, such as ultrahard wear-resistant applications and high-temperature electromagnetic shielding. However, the inherent brittleness of ceramics presents substantial machining challenges for fabricating complex geometries, significantly restricting their practical implementation. The development of robust joining technologies thus represents a critical pathway toward manufacturing large-scale and intricately shaped B₄C–TiB₂ architectures. To date, no studies have been reported on joining B₄C–TiB₂ composites, making this a vital yet unexplored research frontier. Addressing this gap holds tremendous potential to broaden their industrial applicability and pioneer novel advancements in advanced ceramic engineering.