A young palaeontology enthusiast found a rare sea-star fossil at a Calgary playground. This ancient specimen is estimated to be between 250 and 400 million years old. The fossil was embedded in a boulder placed at the park during construction years ago. Experts confirmed its significance and rarity due to specific fossilisation conditions required. The fossil was carefully removed for preservation and potential museum display.

Researchers developed a new construction material using waste coffee grounds and oyster shells. Adding oyster shells, in powdered or granular forms, improved the material's strength. GGBS-based alkali-activated materials served as the binder for these waste components. Curing conditions and activator type significantly influenced the mixture's final performance. Durability results were encouraging, showing high resistance to degradation.