Earth & Environmental Sciences

Astronomers often use spectroscopic (electromagnetic radiation) data and astrometric (motion and positional) data to develop working models describing our Galaxy. Dr Timothy Beers from the University of Notre Dame and his collaborators in Korea and China combined large photometric (visible light) surveys and astrometric data to create multidimensional maps of a large part of the Galaxy. By highlighting significant inhomogeneities in stellar-chemical compositions, motions, and spatial distributions, Dr Beers and his colleagues provide valuable insights into how we can advance our understanding of the formation and evolution of our Galaxy.

Professor Gary Yohe is a distinguished environmental economist whose work has been pivotal in shaping our understanding of climate change impacts, adaptation strategies, and policy frameworks. His interdisciplinary approach combines economics with environmental science, offering nuanced insights into global warming and its multifaceted impacts on natural and human systems. Professor Yohe equips us with the knowledge and strategies needed to navigate the complex and pressing challenges posed by climate change.

Our forests provide important recreational, social, ecological and economic functions. The ForestLab project, led by Dr Attila Borovics at the University of Sopron in Hungary, has been set up to simultaneously protect and utilise this pre-cious resource. Their recent findings point to the importance of addressing ‘old wood’, that is, unused wood stock that currently exists in Hungarian forests and adopting technologies for forest management in the near future.

Dr Adrienne Erickcek at the University of North Carolina is working with colleagues to provide new insights into this mysterious substance. The team is currently investigating how the expansion history of the early Universe affects how dark matter is distributed throughout the cosmos and the implications these structures have for the origins of dark matter itself.

Understanding how subsurface magmatic activity affects the Earth’s crust is crucial to accurately forecasting volcano eruptions. Dr Sam Poppe and his team at the Space Research Centre of the Polish Academy of Sciences have developed a multimethod approach combining scaled laboratory models, fieldwork, observations of other planetary bodies, and numerical models to determine the effect of magma emplacement dynamics on the crusts of planetary bodies like the Earth, Moon, and Mars. By progressing the understanding of the mechanics of volcanoes, their work can improve the prediction of eruptions on Earth and understanding of past volcanic activity on our surrounding moons and planets.

Yams are an essential nutritional crop in Puerto Rico, but unfortunately, years of poor management have left farmers with a lack of good-quality seeds from which to grow new plants. Dr Merari Feliciano-Rivera from the University of Puerto Rico at Mayagüez has been working with a team of scientists and students to address this problem and propagate a new generation of disease-free seeds.

Foods rich in starch, such as bananas, yams, and plantains, are among the most important crops grown in Puerto Rico, contributing significantly to the agricultural economy. However, the diseases affecting these plants significantly threaten the livelihoods of farmers and producers, as well as the island’s food security. Dr Merari Feliciano-Rivera from the University of Puerto Rico has been working with colleagues to find faster and more robust methods of identifying diseases before they can take hold and cause widespread crop damage.

Phenomena in the upper atmosphere are difficult to study for several reasons – some rarely form, others are difficult to see, and all are incredibly high up. Polar Mesospheric Clouds (PMCs) are no exception, forming at around 80 kilometres up into the sky, only under specific atmospheric conditions, and only visible to the naked eye during twilight. PMCs are also called noctilucent or ‘night-shining’ clouds, as they appear to glow in the summer nighttime sky. Professor Richard Collins from the University of Alaska Fairbanks is using rockets to seed these clouds, allowing better investigations of both PMCs and the effects of space traffic on our upper atmosphere.

The El Niño Southern Oscillation (ENSO) is a naturally occurring climate phenomenon that has significant consequences for global weather patterns. Therefore, understanding the mechanisms that drive ENSO is extremely important to improve the resilience of the people and ecosystems impacted by these events. Using climate data spanning 140 years, Dr Valentina Pivotti of Malmö University is investigating the precursors to ENSO events. Understanding the underlying mechanisms is critical for improving climate models and predicting future ENSO events, especially in combination with climate change.

Despite living on a very watery planet, there is a lot we do not understand about rivers, seas and oceans. One particular zone of interest, the place where rivers and oceans meet, remains mysterious to scientists. Dr Alex Simpson, from Scripps Institution of Oceanography, University of California San Diego, has worked with a team of scientists to look more closely into the dynamics of what happens to fresh river water when it reaches the salty ocean, and how this can affect river estuaries and nearby coastal areas.

In many cold regions of the world, snowfall is the primary form of water input to the environment. To a greater degree than rain, snowfall can be prevented from reaching the ground through interception by the canopies of trees, meaning that in heavily forested areas, very little snow reaches the ground immediately. Dr Micah Russell from Western Colorado University and his colleagues have developed a new method using lasers to determine the volume of snow intercepted by forest canopies to help better understand the hydrology of these regions.

The interconnected webs of life on Earth are complex and fragile. With climate change causing more extreme weather conditions, understanding the impact a warmer planet might have on our oceans is vital. The North Pacific and Alaska’s seas are home to a large variety of species, making these important regions for study. Dr Mayumi Arimitsu at the USGS Alaska Science Center is working to understand the complex web of factors that influence the marine food webs in these oceans, and identify the impacts that a warming planet may have.

Like many industries, the manufacture of personal care items such as beauty products is increasingly embracing sustainable practices. Dr Ramez Labib and Dr Lisa Hoffman at Avon Products Inc. in the USA have developed an eco-innovation ranking method to support the early stages of product design. Their semi-automated tool is unique in combining a wide range of measures from ecological risk assessment and life cycle assessment to comprehensively assess the environmental impact of products that end up as wastewater.

Our planet is in peril. Threats such as climate change, habitat destruction, and pollution are contributing to the loss of species at alarming rates. Protecting biodiversity and enhancing ecosystem resilience relies on protecting evolutionary processes at the scale of individuals, species, populations, and ecosystems. Genetic data is a vital component for achieving this, and yet, a significant gap between conservation geneticists and other scientists, conservation practitioners, and policy-makers hinders knowledge-sharing. Dr Francine Kershaw from the Natural Resources Defense Council, USA, has been helping to spearhead a highly collaborative effort to bridge the gap and enhance conservation efforts.

Water is possibly the most important resource on our planet, and being able to model and understand the systems that transport it through and around our planet is essential. As water science straddles many diverse scientific disciplines, gathering and representing heterogeneous data in a standardised way for analysis and modelling can be challenging. A joint project among eight institutions, led by Dr Xu Liang (University of Pittsburgh) and Dr Yao Liang (Indiana University–Purdue University Indianapolis), is creating a generalised, open-source platform to allow complex and diverse data to automatically and directly flow into diverse water models.

Vibrio vulnificus is a bacteria found in warm aquatic ecosystems around the world, capable of infecting and killing both humans and fish. As global ocean temperatures rise, the habitat of this organism is extending, and so are the numbers of infections it causes. Dr Amaro and Dr Hernández-Cabanyero from the University of Valencia are working to understand the biology and lifecycle of this organism so that we can control its growth and virulence to protect fish stocks and human lives.

Weed management on farms is important for increasing not just the overall yield but also the nutrient value of crops. Dr Karla Gage and Ms Madison Wozniak, both from Southern Illinois University, propose a new weed management strategy in which winter wheat is sown alongside soybeans in spring. Importantly, the project is conducted in collaboration with local farmers, confirming the importance of farmer-scientist relationships in progressing agronomic science.

Salmon and other seafood represent a large and important food source. Traditionally, salmon diets consisted mainly of fish, although over the last decade, they have become more vegetable based. However, salmon require essential lipids, which are hard to find except in fish oil. Dr Kyla Zatti and a group of scientists at BioMar have been working to effectively bypass fish oil in their aquafeed by going to the original source of the lipids while maintaining the welfare, growth, and quality of the fish produced.

The phrase ‘standing on the shoulders of giants’ is often attributed to Sir Isaac Newton, meaning that scientific progress is only possible due to the contributions of the scientists who came before. However, many of these giants’ contributions are often forgotten or ignored in favour of their more famous peers. In the field of glaciology, Professor David E. Sugden from the University of Edinburgh is aiming to draw attention to one of the overlooked giants of his field – James Croll, whose work on Ice Age Theory is still relevant today.

Urbanisation and a reduction in natural environments, together with inadequate infrastructure and increased storm events mean that we are vulnerable to the effects of flooding. Mr Daniel Schroeder at the Emergent Technologies Institute in the USA is working with his team to model the effects of storm events and evaluate the effectiveness of stormwater management options in urban areas.

Forests are vital to life on Earth. Dr Chao Li at the Canadian Forest Service is an accomplished ecologist who has dedicated his career to forest ecology, working to reconcile human demand for wood products with the vital ecological services of forests. His recent research has explored the utility of promoting the growth of forests through careful removal of some trees – a phenomenon known as compensatory growth.

Our polar seas are particularly vulnerable to climate change, and melting ice and increasing temperatures could have a devastating impact on the endemic biodiversity of the region. One of the most abundant species in the Arctic Ocean is the Arctic cod (Boreogadus saida, also called polar cod), making it an ideal candidate to study the effects of climate change on prey fish populations, and the impact this will have on wider marine ecosystems. This is the focus of important research from Dr Caroline Bouchard at the Greenland Climate Research Centre and her collaborators.

Much research has focused on Single Large or Several Small (‘SLOSS’) habitats for the preservation and restoration of biodiversity. Many studies have been carried out in terrestrial environments but far fewer have looked at marine systems. However, it is unwise to make conclusions about the marine environment based on studies carried out on land. Together with colleagues, Dr Tim Wilms from the Technical University of Denmark is recreating lost rocky reef habitats and surveying these sites to see how they impact the return of vital marine species to the area.

Algal biofuels offer a renewable and carbon-neutral alternative to fossil fuels. These photosynthetic microorganisms can be grown inexpensively in large ponds, but being exposed to the elements risks biological contamination from other microorganisms. Dr Robert Pomeroy and colleagues at the University of California, San Diego, used chemical ionisation mass spectrometry to continuously measure the quantities and compositions of volatile gases produced by algal pond samples, allowing for the detection of infectious species and assessment of the impact such pests have on algal communities.

The West Antarctic Ice Sheet (WAIS) is one of Earth’s most rapidly warming regions, holding huge implications for global ocean rise and large-scale weather events. Yet, despite its influence on large-scale climate patterns, the WAIS remains one of Antarctica’s most poorly studied areas. Dr Dan Lubin, of the Scripps Institution of Oceanography at the University of California, San Diego, brought renewed interest to this neglected but critical region with the AWARE programme, one of Antarctica’s most extensive scientific campaigns yet. The programme seeks to improve our understanding of the physical processes influencing the West Antarctic to improve global model simulations.

Throughout the earth’s history, the prevailing climate has changed over and over. To gain insights into the history of our planet, scientists use clues uncovered from the earth’s surface. However, not all periods in the earth’s history are equally represented in the geological record. Dr Michael Gipp is using the surprising similarities between computer algorithms and complex natural systems to describe our ancient climates.

Throughout history, we have relied on many different energy sources. Initially, wood was used for heating and cooking; as industry grew, we moved to fossil fuels; and the scientific advances of the 20th century allowed us to harness sources such as nuclear, solar and tidal energy. The transition from one fuel type to another has led to the identification of some intriguing paradoxes. Professor Nuno Luis Madureira from the University Institute of Lisbon studies these transitions and is shedding light on this fascinating subject.