The world's ice sheets are on course for runaway melting, leading to...

CNN Climate 1 year ago

The world's ice sheets are on course for runaway melting, leading to multiple feet of sea level rise and "catastrophic" migration away from coastlines, even if the world pulls off the miraculous and keeps global warming to within 1.5 degrees Celsius, according to new research. A group of international scientists set out to establish what a "safe limit" of warming would be for the survival of the Greenland and Antarctic ice sheets. They pored over studies that took data from satellites, climate models and evidence from the past, from things like ice cores, deep-sea sediments and even octopus DNA. What they found painted a dire picture. The world has pledged to restrict global warming to 1.5 degrees Celsius above pre-industrial levels to stave off the most catastrophic impacts of climate change. However, not only is this limit speeding out of reach — the world is currently on track for up to 2.9 degrees of warming by 2100. But the most alarming finding of the study, published Tuesday in the journal Communications Earth and Environment, is that 1.5 might not even be good enough to save the ice sheets. Even if the world sustains today's level of warming, at 1.2 degrees, it could still trigger rapid ice sheet retreat and catastrophic sea level rise, the scientists found. Read more at the link in our bio. 📷: Sebnem Coskun/Anadolu Agency/Getty Images; Mario Tama/Getty Images

layersDaily Sustainability Digest

Published about 2 hours ago



Cornwall’s geothermal brines are nearing commercial output of about 100 tonnes a year of battery‑grade lithium carbonate, strengthening domestic energy‑storage supply chains for electrified, energy‑efficient buildings and net zero carbon buildings. The shift supports low carbon design and sustainable construction by reducing import risk and improving environmental sustainability in construction.

A major analysis warns land and ocean carbon sinks are under intensifying pressure and that carbon pricing is failing to protect them. Developers can no longer rely on offsets to balance the carbon footprint of construction. Real reductions in operational and embodied carbon must lead project strategy, backed by whole life carbon assessment, lifecycle assessment, and life cycle thinking in construction. Robust data through environmental product declarations (epds), clear targets for embodied carbon in materials, and adoption of low embodied carbon materials and green building products are becoming standard practice. Alignment with BREEAM and breeam v7 can help verify net zero whole life carbon trajectories while optimising life cycle cost and building lifecycle performance.

The UK’s £400m loan to the Tropical Forests Forever Facility, aimed at protecting over a billion hectares of rainforest, could stabilise sustainable timber supply for mass‑timber, reinforcing renewable building materials within a circular economy in construction. Delivery depends on governance and sustainable material specification to ensure green construction outcomes and eco‑friendly construction that advances carbon neutral construction.

Industry capacity is inching forward as a major utility redeploys 500 veterans into smart energy and heat‑pump roles, easing the labour bottleneck stalling retrofit and decarbonising the built environment. Skills growth underpins sustainable building design, sustainable building practices, green infrastructure and low carbon building upgrades across sustainable urban development.

Wildfires reaching typically cool, damp parts of Europe underline the need for fire‑resilient façades, materials and landscaping integrated into sustainable design and eco‑design for buildings. Priority actions include resource efficiency in construction, circular construction strategies, end‑of‑life reuse in construction and circular economy approaches that deliver measurable carbon footprint reduction.

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