The last two decades have seen a series of new construction waste policies management in Hong Kong. One of the most significant is an offsite construction waste sorting (CWS) programme which, since its implementation in 2006, has separated 5.11 million tonnes of construction waste into different materials. The researchers suggest that the study provides an important reference for other countries working to minimise construction waste.

Citizen science is not only a tool for collecting valuable scientific data, it can also enable participants to reconnect with nature and encourage pro-conservation behaviour, new research has shown. Participants in a French butterfly monitoring programme reported making wildlife-friendly changes to their gardens as a result of taking part in the initiative.

To date, it has been difficult to collect data that are robust enough to demonstrate specific effects of chemical pollution in rivers on aquatic wildlife. However, a recent study combining detailed chemical, toxicological and ecological data in three European river basins now provides evidence linking cause and effect by revealing significant differences in the effects of differently polluted sediments on the organisms living in the river basins and the riverbed biodiversity.

A standardised method to help choose the most cost-effective measures to remediate contaminated sites has been developed by Austrian researchers. The method takes into account a wide range of factors, including the principles of sustainability.

Researchers have found that ocean acidification leads to changes in the ways that clownfish normally respond to sound. As many species rely on hearing for orientation, habitat selection, avoiding predators and communication, ocean acidification could compromise auditory behaviour crucial for survival.

Levels of air pollution significantly increase on the island of Svalbard in the Norwegian Arctic when tourist cruise ships are present, according to a recent study. With shipping levels rising in the region, the researchers recommend that stricter emissions regulations are introduced in order to limit the impact of pollution on the Arctic environment.

A recent study has revealed how water use has changed across the world over the last 60 years. Growing populations and economic development, particularly in newly-emerging countries, have increased water demand, but technological developments have led to water efficiencies and savings, which moderate these demands.

Researchers have developed a new model to assess the health-related external costs arising from air pollution from ten major emission sectors. Applying the model at national and Europe-wide levels, they suggested that the major contributors to costs were industrial power production, agriculture, road traffic and domestic combustion.

Green roofs have the potential to significantly reduce road traffic noise in the urban environment, according to a new study. The results suggest that greening of roofs and walls with materials suitable for growing plants softens the urban environment keeping sound levels low, whereas hard, manmade structures tend to amplify traffic noise.

The development of Green Infrastructure (GI) in a UK case study has been researched in a recent study. Some issues caused by an imbalance in stakeholder power and conflicting roles played by major stakeholders were identified with the project. Stakeholder participation is central to the concept of GI and the research reiterates the importance for those implementing GI to ensure that participation is effective and balanced.

Neither the public nor conservation managers are fully aware of the different risks posed by invasive alien species (IAS), new research suggests. A study examining perceptions of five invasive species in the UK shows that both conservation managers and the public regard some highly damaging species as ???low risk???, and that their awareness does not increase with the amount of scientific research on the topic.

International agreements to reduce plastic use are needed to address plastic litter in the marine environment, as well as increased public awareness of the problem, according to scientists at a workshop on the EU Marine Strategy Framework Directive held in Italy in 2013. The issues discussed at the workshop have been summarised in a recent research paper.

Density in the urban environment can encompass a multitude of factors such as population or dwelling density or the density of green areas. A new study surveyed professionals regarding how decisions on urban density are made, and has revealed that many feel that developers make most of these decisions, but that local authority planners should have more influence.

Biodiversity on organic farms is, on average, 34% higher than on conventional farms, according to a recent study. The researchers used data from a large number of studies to show that this figure has remained stable over the last 30 years.

Efforts to address climate change and protect natural ecosystems can – and need to – benefit each other. But conflicts can arise. This Future Brief focuses on how land-based ecosystems are affected by wind and solar photovoltaic (PV) development, and how win-win solutions which maximise both conservation and climate benefits may be developed. Recommendations include careful site planning, regeneration and enhancement, and use of multi-level ecosystem data.

Wealthier nations protect biodiversity no better than poorer nations, suggests new research. The study found no link between national GDP and the effectiveness of countries at conserving the species for which they have responsibility.

Damage caused by boats anchoring in seagrass meadows off the coast of Sardinia continues despite restrictions, new research shows. The study's authors provide a number of recommendations to help protect seagrass. These include creating special anchoring areas in seagrass-free locations, and limiting the number of boats that enter a marine protected area.

Pollination studies have, to date, focused almost entirely on bees , butterflies and hoverflies; however, other kinds of flies also have an important role to play in this vital ecosystem service, a new study suggests. Using data from 33 farms, the researchers found that non-hover flies were in fact responsible for carrying 84% of the pollen transferred by flies between flowers in farmland.

Marine Protected Areas should be managed as integrated networks rather than isolated units because of the high degree of exchange between them, a new study suggests. The researchers found that the large majority of sea bream (Sparidae) and wrasse (Labridae) fish spawned in MPA study sites in the Mediterranean Sea were transported via currents to other MPAs and unprotected areas, highlighting their interconnected nature.

The number of overexploited or collapsed fish stocks in the Mediterranean Sea has been increasing at a rate of approximately 38 every 10 years between 1970 and 2010, a new study has shown. In the Black Sea, the equivalent figure is 13 stocks per decade, the researchers found. The study’s authors augmented traditional methods of stock assessments with a variety of other data sources on multiple fish species to give a more accurate overview of these marine ecosystems. These results should be used to improve conservation and management, they recommend.

Increases in the amount of CO₂ in the atmosphere can be beneficial to crops, by providing a source of carbon for growth. However, very high levels of CO₂ have the reverse effect, decreasing the yield and quality of vegetable crops, a new study has shown. The researchers say atmospheric CO₂ concentration should be kept below 5 000 ppm to enhance the yield of leafy vegetables such as cabbage and lettuce.

Urban water use increases with a population’s average income, finds a study of a stressed river basin in Spain. Consumption also increases with population age, but falls as education levels rise. Such information could help municipal water providers predict future water trends and to develop appropriate measures by which to manage demand. There is huge interest in mining polymetallic nodules in deep-sea environments. These bumpy rocks on the seafloor contain highly valuable materials including manganese, iron, cobalt, nickel and copper.

Invasions of alien species are rising at an alarming rate, largely due to growing global trade and transport routes. Preventing the successful establishment of alien species by better understanding the factors determining success is a step toward limiting the threat of future biological invasions. Statistical modelling using observed bird invasion data — including location, event and species-level factors showed which factors were key to successful establishment by the alien species.

A circular economy, in which waste is minimised and resources are kept within the system, relies upon inventive ways of turning waste into a resource. A new study explored the possibility of using the microalga Scenedesmus obliquus to refine and process brewery wastewater. The alga efficiently removed pollutants from the effluent, produced biomass and biofuels in a range of different forms — and with different bioactive compounds — and encouraged waste barley and wheat to germinate at increased rates. This is especially important for breweries, as barley seeds are one of the main feedstocks for the industry — and thus are key to increasing its sustainability and circularity.

The most comprehensive glacier assessment yet reveals that glacier melt was responsible for 27mm of sea level rise between 1961 and 2016. Ice loss from glaciers is now the second biggest contributor to rising sea levels after warming water. If glaciers continue to melt at current rates, most — including many in central Asia, central Europe, western Canada and the USA — will vanish during the second half of this century.

Demonstration projects can represent a critical intermediate step between research and development (R&D) and large-scale commercialisation; yet many involving new sustainable technologies fail. In order to map the internal and external factors that enable or prohibit demonstration projects from reaching their goals, a case study of 21 projects was conducted. Qualitative data collected from funding applications and interviews were analysed to identify key themes. Based on these findings, the study proposes a process model outlining the key activities for setting up a new demonstration project.

Approximately 88 megatonnes (Mt) of food are wasted every year in the European Union, causing 186 metric tons (Mt) carbon dioxide equivalent (CO2-eq) — a universal measure for all greenhouse gases. The impact of food waste on the climate, acidification and eutrophication is around 15–16% of the environmental impact of the entire food chain. In developed countries, food waste is high at the point of consumption— so significantly reducing food losses would require a food-waste reduction in households and the food-services sector.

Polycyclic aromatic hydrocarbons (PAHs) are a large group of toxic molecules produced by forest fires, industrial processes and the incomplete combustion of fossil fuels. The airborne particles containing these molecules are often washed into watercourses, where they can persist. This study uses long-term monitoring data from the Elbe river, Saxony, Germany, to show how changes in PAH sources affect both the concentrations of these chemicals and the corresponding environmental risks. The researchers suggest that controlling PAHs is the best prevention of harm to aquatic and human health.

How can we grow more crops without taking too much water away from freshwater ecosystems for irrigation? A new study indicates that it is possible to double crop production by 2050 without exceeding set limits for water extraction if more crops are grown in regions with higher rainfall and with corresponding shifts in international trade and agricultural management. However, without appropriate safeguards, and if we follow the current business-as-usual scenario, this could come at the ecological cost of converting natural land and forest into cropland. This research provides a ‘first-step’ in analysing potential trade-offs in the global food-trade-water nexus.

A new study has investigated the possibility of a regional industrial symbiosis of metal industries across the Sweden-Finland border. The analysis suggests that it is technologically feasible, but that regulatory support may be inefficient, particularly with respect to changing the status of a waste product to a by-product.

The amount of land and ocean that a country uses in order to produce food and other commodities, or its land or ocean ‘footprint’, increases by over a third for each doubling of income, new research shows. Thus, as nations become richer, and lifestyles become more affluent, pressure on natural resources increases.

Promoting the personal benefits of sustainable consumption, such as more free time and less stress, could play an important role in encouraging more sustainable living, according to a recent study. The researchers interviewed people who lived greener lifestyles and found that self-interest influenced their decision to consume less and buy sustainable products.

Rapidly changing fashions increase the production and consumption of textiles and clothing. According to Finnish researchers, more sustainable production and consumption of clothing could be achieved if consumer values are used to rethink design and business strategies. For example, increased personalisation of clothing could increase consumer attachment to products.

New research has recommended using both ecological and carbon footprints to assess the impact of environmental policies and strategies at a regional level. The combination can provide an evidence-based means of evaluating policies to help achieve environmental targets.

A new study has shed light on the sustainable credentials of bio-based plastics. It indicates that, as yet, no bio-based plastics are sustainable, owing to practices including pesticide use. However, this could change with further technological development.

New research has produced a starch-based bioplastic with similar properties to equivalent traditional oil-based plastics. By adding an ammonium salt to thermoplastic starch (TPS) the study demonstrated an improvement in the plasticisation process, rendering it flexible, mouldable and potentially recyclable.

New research has assessed the environmental impact of gold production using life cycle assessment and estimated embodied energy and greenhouse gases, embodied water and solid waste burden that each tonne of gold produces, using various processes.

Fish farms, and other forms of aquaculture, are seen as a potential solution to meeting increasing global demand for seafood. However, according to recent research, they must reduce their reliance on wild fish for animal feed if current production levels from both aquaculture and wild fisheries are to be maintained.

In a recent experiment in Norway, electrical appliance stores increased their sales of energy-efficient tumble driers when consumers were made aware of their cheaper lifetime operating costs by shop staff and a new product labelling system.

A new study indicates that ‘commitment’ interventions are effective in encouraging environmentally-friendly behaviour, both in the short- and long-term. However, to increase the effectiveness of such interventions, whereby people promise or pledge to perform certain behaviours, more research is needed on the psychological processes behind their effects.

Building Information Modelling (BIM) can enhance the design of a building, reduce costs and save energy. However, little research has been carried out on its impact on sustainable practices. A US survey illustrates that many practitioners do not see sustainability as a primary application, suggesting that more effort is needed to encourage the integration of ‘green’ design and construction into BIM.

According to new research, improved communications and financial assistance could encourage private forest owners to engage more willingly in forest management. Personal economics, moral obligations, traditional ideas of how a forest should look and fear of forest fires were found to influence whether forest owners participate in management activities.

People who are committed to reducing their environmental impact at home do not necessarily behave in the same way when on holiday, according to a new study. The study presents a more complex view of consumer environmental behaviour than is often used to inform policymaking.

Standardised methods of categorising environmental data are needed at European and international levels for effective international policies. A recent study has concluded that a European framework that harmonises environmental data at the continental scale corresponds well with national classification systems, although some modifications may be needed to capture small-scale regional variations.

A new analysis of how to encourage pro-environmental behaviour highlights four effective techniques: goal-setting, prompts or reminders, witnessing the behaviour of others and introducing new behaviours that correspond with existing beliefs.

Public authorities in EU Member States are encouraged to purchase more environmentally-friendly goods and services through Green Public Procurement (GPP). A recent survey of purchasing managers in Italy has identified some factors that influence their adoption of this strategy, and suggests that a broad knowledge of GPP is key to its implementation.

A new study indicates that ‘commitment’ interventions are effective in encouraging environmentally-friendly behaviour, both in the short- and long-term. However, to increase the effectiveness of such interventions, whereby people promise or pledge to perform certain behaviours, more research is needed on the psychological processes behind their effects.

Providing information to consumers on the environmental and social impacts of their food purchases could help change their consumption choices, research from Norway suggests. In a psychological study, researchers noted an increase in the number of organic and fair trade products bought per week when participating consumers were informed of the products’ benefits for the environment and the wellbeing of producers.

A recent Swiss-US study of a short-term water saving campaign found that, although the programme successfully reduced water use, there was also an overall increase in electricity consumption by participants. The researchers suggest a ‘moral licensing’ effect may be in action, whereby people ‘trade’ a positive behaviour for a negative one.

Sustainable management of complex ecosystems requires clear understanding of uncertainty. However, scientific guidance documents show a lack of clarity and coherence regarding uncertainties and tend to focus solely on the need for more data or monitoring, new research indicates. The researchers suggest that scientific guidance should recognise uncertainty as an inherent part of any complex ecosystem.