• POSTnote

    The darknet and online anonymity

    A very small proportion of websites use sophisticated anonymity systems, which allow their operators to conceal their identity if they wish to. This part of the web is commonly referred to as the darknet. The darknet helps citizens to protect their security and privacy and to circumvent censorship. It also facilitate organised crime, such as the billion dollar drug market known as Silk Road. This POSTnote discusses the challenge of preventing such crimes without compromising the other uses of anonymity technologies.

  • POSTnote

    Emissions from Crops

    Agriculture contributes 9% of the UK’s greenhouse-gas (GHG) emissions burden and 10-12% globally. Although there is a long-term declining trend from UK agriculture, the sector may account for a larger share of overall emissions in the future as other sectors reduce emissions. This POSTnote focuses on reducing GHG emissions from growing and storing arable and horticultural crops.

  • POSTnote

    Catchment-Wide Flood Management

    Changing weather patterns have made structural defences less effective at managing flooding. An approach that employs a range of natural flood management measures across a river catchment is likely to reduce the probability of flooding and pressure on structural defences. This POSTnote describes the measures and the challenges of implementing them over large catchments.

  • POSTnote

    GM Insects and Disease Control

    Insects play a critical role in ecosystems, but can also cause economic and social harm by transmitting diseases to humans and livestock, and damaging crops. Genetically modified (GM) insects could be used alongside other approaches to mitigate harms. This POSTnote summarises possible benefits, risks and uncertainties associated with their deployment.

  • POSTnote

    Diffuse Pollution of Water by Agriculture

    Water pollution regulation is devolved in the UK. Surface, coastal and ground waters in England suffer from significant pollution problems: 78% of surface and groundwater bodies fail to meet the ‘good’ ecological status prescribed by the EU Water Frameworks Directive. Pollution increases water treatment costs and adversely affects wildlife. Compared to treatment, preventing water pollution at source can have a cost-benefit ratio as high as 1:65. This POSTnote describes the contribution of agriculture to water pollution, and measures that can be taken to reduce it.

  • POSTnote

    Short Lived Climate Pollutants

    Short lived Climate Pollutants (SLCPs) include black carbon, methane, hydrofluorocarbons (HFCs) and ground level ozone. Although they have a shorter residence time in the atmosphere than CO2, from a few days to a few decades, they contribute to near term climate change. This POSTnote summarises options for mitigating SLCP concentrations and the benefits and challenges of doing so.

  • POSTnote

    Phosphate Resources

    World food security is dependent on phosphate fertilisers manufactured from finite deposits of phosphate ore. The majority of remaining reserves are restricted to a limited number of countries raising geopolitical risks. This POSTnote describes the uses of phosphate and summarises ways in which dependence on mineral reserves could be reduced.

  • POSTnote

    Reducing Emissions from Deforestation

    The UNFCCC REDD+ scheme aims to promote sustainable forest management in developing countries in order to reduce carbon dioxide emissions. Developed countries are expected to provide finance of approximately $20bn per year from 2020. This POSTnote summarises the extent to which REDD+ could contribute to meeting international climate targets, challenges to its implementation and technologies for tracking its performance

  • POSTnote

    Environmental Citizen Science

    Environmental citizen science traditionally involves members of the public submitting sightings of wildlife to NGOs or records centres, but emerging technologies have recently broadened its use to all kinds of environmental data. This POSTnote summarises different types of citizen science projects, policy-relevant applications and the benefits and challenges of volunteer collected data.

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