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This paper evaluates a unique, transdisciplinary participatory research and knowledge exchange methodology developed in the Drought Risk and You (DRY) project and offers it as a transferable framework for others engaging stakeholders and systemic connections with environmental risk. Drought in the UK is a complex, diffuse and hidden risk, involving multiple stakeholders and systemic connections across diverse sectors. Historically, drought risk management has been underpinned by specialist science and technology implemented by statutory stakeholders. This paper critically evaluates the social learning from a longitudinal research process that involved co-working with seven river catchment-based, multi-stakeholder groups. The DRY project was a creative experiment in bringing drought science and stories into the same space, aiming to reveal different knowledges—specialist science, practical sector-level insight, and local knowledge—as a new evidence base to support better decision-making in UK drought risk management. An evaluative multi-method research methodology was overlaid on this process, using surveys, within meeting reflective evaluations, and summative semi-structured narrative interviews. This paper reflects on participant experiences of the ‘open’ scientific modelling development, ‘storying’ approaches, and their iterative interaction. It outlines the enablers, inhibitors and required support for this engagement process, which aimed to facilitate integration of different forms of knowledge as evidence, with social and sustainability learning among diverse stakeholders at its core. The process offered opportunity for valuable experiential learning as researchers of the nuanced impacts of intersecting factors on participatory place-based methods. It showed that similar approaches to science-narrative dialogic processes can play out locally to integrate aspects of social and sustainability learning in different ways. This sustainability learning provided a valuable platform for creative multi-stakeholder scenario-ing possible drought futures for increased local climate resilience. It then proposes a transferable research framework that promotes participatory, place-based, narrative-science knowledge exchange for building local capital for managing systemic environmental risk.

October 1957, and the successful launch of Sputnik 1 into Earth orbit, marked the dawn of the Space Age. The first of the 'fellow travellers' - humanity's first artificial satellite - orbited for a mere three months before re-entering the Earth's atmosphere, though its mission paved the way for an era of exploration that has endured to the present day. For many, a world without satellites would be a difficult one to imagine. As a society, we have become reliant on them for a vast array of services and applications. With a divine view of large swathes of the Earth's surface, and the ability to relay signals around its curvature, satellites have enabled the fast transfer of data on a global scale, bypassing the challenges associated with ground-based broadcasting, long-distance wiring, and so on. Positioning, Navigation and Timing (PNT) satellites have revolutionised transportation by land, air, and sea, while weather satellites enable scientists to monitor and warn of large-scale phenomena as they develop in near real-time. Satellites have extended the frontiers of observation: looking outwards, astronomers are able to circumvent the Earth's atmosphere to look deeper into the cosmos than ever before; looking inwards, patterns and processes that feed into general circulation models can be monitored on a range of timescales, improving our understanding of climate change. Satellites, and the services they provide, are not going to disappear any time soon. That said, threats to satellite safety do exist, and it is important that they be addressed as soon as possible to avoid long-lasting damage to operations in the space domain. Nearly sixty-five years on from the advent of human activity in space, I chart the evolution of the orbital debris environment and review latest efforts to make space operations more sustainable., Comment: 9 pages, 6 figures - Invited review for Astronomy & Geophysics (RAS Journals) - Accepted for publication in Volume 63, Issue 2

The abundance of deuterium in giant planet atmospheres provides constraints on the reservoirs of ices incorporated into these worlds during their formation and evolution. Motivated by discrepancies in the measured deuterium-hydrogen ratio (D/H) on Jupiter and Saturn, we present a new measurement of the D/H ratio in methane for Saturn from ground-based measurements. We analysed a spectral cube (covering 1151-1160 cm$^{-1}$ from 6 February 2013) from the Texas Echelon Cross Echelle Spectrograph (TEXES) on NASA's Infrared Telescope Facility (IRTF) where emission lines from both methane and deuterated methane are well resolved. Our estimate of the D/H ratio in stratospheric methane, $1.65_{-0.21}^{+0.27} \times 10^{-5}$ is in agreement with results derived from Cassini CIRS and ISO/SWS observations, confirming the unexpectedly low CH$_{3}$D abundance. Assuming a fractionation factor of $1.34 \pm 0.19$ we derive a hydrogen D/H of $1.23_{-0.23}^{+0.27} \times 10^{-5}$. This value remains lower than previous tropospheric hydrogen D/H measurements of (i) Saturn $2.10 (\pm 0.13) \times 10^{-5}$, (ii) Jupiter $2.6 (\pm 0.7) \times 10^{-5}$ and (iii) the proto-solar hydrogen D/H of $2.1 (\pm 0.5) \times 10^{-5}$, suggesting that the fractionation factor may not be appropriate for stratospheric methane, or that the D/H ratio in Saturn's stratosphere is not representative of the bulk of the planet., 9 pages, 6 figures, 1 table