It started with the mysterious discovery of more than a hundred turtles, some with their shells smashed, others dismembered, all of them dead. It ended with a potential warning for the future.
It was Gregory Bulté who found the turtles. The biologist from Carleton University was out on the water of eastern Ontario's Opinicon Lake in April 2022 when he saw a dead northern map turtle — so-called because its shell resembles the contour lines of a map. As he bent to pick it up from the shallows, he saw another.
Bulté raced home, fetched his wetsuit and snorkel and got into the frigid water — where winter ice had recently melted — to collect the bodies. He kept finding more piles of dead turtles; he filled buckets with them. "I was like, 'Whoa, when is this going to end?'" he said.
When it eventually did, he had nearly 150 dead turtles, many of which Bulté knew from his two decades of monitoring work at the near-pristine, forest fringed lake. It was a devastating blow, wiping out roughly 10% of the lake's population.
The deaths were a puzzle for Bulté. It was clear from the turtles' damaged bodies that this was a predator attack, and only one animal was likely strong enough to have done it: the river otter.
Read more at the link in our bio.
📸: Michael O. Snyder and Justin Dalaba
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Within sustainable urban development, the focus is moving from policy aspiration to practical delivery through eco‑design for buildings that align with net zero whole life carbon standards and BREEAM benchmarks. Across markets, policy remains uneven. The United States risks reversing momentum by diverting funds from offshore renewables toward fossil infrastructure, threatening the circular economy in construction and investment in low carbon construction materials.
European efforts to reform carbon pricing could soften incentives for low embodied carbon materials including low‑carbon cement and steel, delaying carbon footprint reduction in key supply chains. Leadership from clients applying lifecycle assessment and life cycle cost analysis is essential to maintain progress toward carbon neutral construction and decarbonising the built environment.
The retrofit agenda in England underscores the social dimension of environmental sustainability in construction, with millions of homes requiring energy‑efficient upgrades to meet the standards of net zero carbon buildings. Contractors capable of large‑scale retrofits integrating heat pumps, insulation, and resource efficiency in construction methods stand to capture the rising demand for eco‑friendly construction. The industry’s advantage now lies in embedding whole life carbon thinking, optimising building lifecycle performance, and applying circular construction strategies that reduce the environmental impact of construction while securing resilience through a measurable circular economy.
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