Circular economy approach to eggshell waste utilisation: Insoluble protein extraction and CaCO3 upcycling for carbonated hydroxyapatite (cHAP)-based fire-resistant wood - Edita Garskaite; Stephen R. Euston; Jozef Martinka; Peter Rantuch; Konrad Wilkens Flecknoe-Brown; Patrick van Hees; Michael Försth; Alexandra Byström; Dietrich Buck; Dick Sandberg (PLoS ONE, 2026)