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Cambridge Forum for Sustainability and the Environment

 

Thu 27 Feb 16:30: Nuclear Fuel Cycle: Today's Challenges

Related talks@cam - Tue, 25/02/2025 - 11:14
Nuclear Fuel Cycle: Today's Challenges

From uranium enrichment to the management of radioactive waste, please join the Nuclear Energy Master programme as we explore the challenges faced in managing the nuclear fuel cycle, presented by Urenco Global’s Louie Swallow and Sellafield Ltd.’s Jennifer Humphries

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NASA cuts off international climate science support

Related publications - Mon, 24/02/2025 - 22:20
U.N. panel meets for first time without U.S. leadership

Unusual ‘soda lakes’ may have kick-started life on Earth by concentrating key compounds

Related publications - Mon, 24/02/2025 - 21:20
Phosphorus leached from volcanic rocks in warm waters could have triggered reactions needed to launch biochemistry

Come together, right now | Science

Related publications - Mon, 24/02/2025 - 14:01
The chaos, conflicting information, firings, and hurtful rhetoric of the Trump administration’s approach to science over the past month are causing anxiety, grief, and concern for the scientific community in the United States. The dramatic events are ...

Wed 12 Mar 14:00: Spatio-temporal Melt and Basal Channel Evolution on Pine Island Glacier Ice Shelf from CryoSat-2

Related talks@cam - Mon, 24/02/2025 - 09:59
Spatio-temporal Melt and Basal Channel Evolution on Pine Island Glacier Ice Shelf from CryoSat-2

Ice shelves buttress the grounded ice sheet, restraining its flow into the ocean. Mass loss from these ice shelves occurs primarily through ocean-induced basal melting, with the highest melt rates occurring in regions that host basal channels – elongated, kilometre-wide zones of relatively thin ice. While some models suggest that basal channels could mitigate overall ice shelf melt rates, channels have also been linked to basal and surface crevassing, leaving their cumulative impact on ice-shelf stability uncertain. Due to their relatively small spatial scale and the limitations of previous satellite datasets, our understanding of how channelised melting evolves over time remains limited. In this study, we present a novel approach that uses CryoSat-2 radar altimetry data to calculate ice shelf basal melt rates, demonstrated here as a case study over Pine Island Glacier (PIG) ice shelf. Our method generates monthly Digital Elevation Models (DEMs) and melt maps with a 250 m spatial resolution. The data show that near the grounding line, basal melting preferentially melts a channel’s western flank 50% more than its eastern flank. Additionally, we find that the main channelised geometries on PIG are inherited upstream of the grounding line and play a role in forming ice shelf pinning points. These observations highlight the importance of channels under ice shelves, emphasising the need to investigate them further and consider their impacts on observations and models that do not resolve them.

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Thu 27 Feb 11:30: Green Carbon for the Chemical Industry: Decoupling Polymers from Fossil Resources

Related talks@cam - Mon, 24/02/2025 - 09:30
Green Carbon for the Chemical Industry: Decoupling Polymers from Fossil Resources

Reducing reliance on fossil carbon is central to the concepts of sustainable development and material stewardship. Whereas decarbonization of the energy sector is feasible through the development of renewable energy, the chemicals sector needs carbon as a building block. The lasting and growing demand for this embedded carbon, especially for production of polymers, must be met in the future through utilization of renewable feedstocks such as biomass, CO2 and recycling of carbon-containing waste. In this context, the transition from fossil to renewable polymers provides a major challenge. Advances in renewable polymers will be exemplified through case studies of two of the most promising bio-based platforms for plastics: lactic acid (LA) and hydroxymethylfurfural (HMF).

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U.S. early-career researchers struggling amid chaos

Related publications - Fri, 21/02/2025 - 23:35
Uncertain funding, government firings, and distressed universities hit vulnerable groups especially hard

Modest telescope with big plans, SPHEREx will probe cosmic ‘inflation’ after Big Bang

Related publications - Fri, 21/02/2025 - 22:20
Spacecraft with gather and analyze infrared light in new ways to explain why our universe is “boring”

‘Death by ax’: Fate of millions of research animals at stake in NIH payments lawsuit

Related publications - Fri, 21/02/2025 - 14:50
Rodent and monkey facilities imperiled by Trump plan to cut overhead payments

Experimental evolution of evolvability | Science

Related publications - Fri, 21/02/2025 - 14:01
Evolvability—the capacity to generate adaptive variation—is a trait that can itself evolve through natural selection. However, the idea that mutation can become biased toward adaptive outcomes remains controversial. In this work, we report the evolution ...