A project of the Thomson Reuters Foundation, AlertNet is a news aggregator that aims to raise awareness of humanitarian crises around the globe, particularly 'forgotten' emergencies that rarely make headlines. It publishes news from over 400 aid agencies and other media outlets across a range of topics, from natural disasters to climate change to health. AlertNet also provides tools for journalists, including facts and figures, crisis briefings and training modules.

The Beyond Rio Resource Centre, run by the Sussex Climate Change Network at the University of Sussex, UK, offers information about new ideas and practical solutions for sustainability. It is aimed at practitioners, policymakers, academics and students interested in sustainable development. The website publishes information on two overarching themes — the green economy and institutional frameworks — and seven critical issues, including food, water and energy. It includes open access publications supporting these themes, and a wide range of briefings, project reports, website links and films.

This programme aims to encourage better management of water for food production by increasing the resilience of social and ecological systems.

It does this by focusing on the interconnections between water, food and poverty in developing countries. The programme helps develop water-related innovations by bringing together scientists, development specialists, policymakers and communities.

The website publishes information on its research programmes and projects as well as blogs and related news, job vacancies and events.

This not-for-profit arm of the water, climate and policy think tank, the Pacific Institute, publishes information on the global freshwater crisis, written by journalists, scientists and others. It publishes daily news and data, as well as commentaries, book reviews and special reports on issues such as traditional knowledge for drought management in Botswana, and hydropower in Argentina.

The website also hosts images and video content.

The Dartmouth Flood Observatory, based in the United States, uses remote sensing data to detect, measure and map river discharge and flooding. It publishes rapid response inundation maps during a flood as well as an atlas of large floods from 1985 to present.

Data from the observatory are used by several disaster alert and relief agencies, including Sentinel Asia, Thomson Reuters AlertNet, the UN Office for the Coordination of Humanitarian Affairs and Europe's Global Disaster Alert and Coordination System.

The Desert Research Institute is based in Nevada in the United States. Its principal research areas include atmosphere, water and land management – in the United States and in the developing world. The institute is engaged in a project to bring clean water and sanitation to communities in Ghana, Mali and Niger through the West Africa Water Initiative (WAWI). WAWI aims to do this before 2008.

Part of the UN Development Programme, the Environment and Energy group work in six areas: water governance, frameworks and strategies for sustainable development, sustainable energy, sustainable land management, biodiversity and chemicals management.

The group publishes information on its projects in each of these areas as well case study analyses, policy papers, toolkits for practitioners, press information and links to external websites.

The Food and Agriculture Organization's (FAO) Water Development and Management Unit website promotes sustainable water use for food production. It utilises data on water resources and agricultural water usage to help form national and regional water management strategies, inform agricultural policies and provide technical expertise on issues such as wastewater treatment and salinity control. The FAO Water website publishes promotional and educational material as well as reports on individual projects, it also provides links to interactive maps, multimedia and databases relevant to water management.

The Freshwater Action Network (FAN) brings together civil society organisations that implement and influence water and sanitation policy and practice. It works to improve water governance by strengthening the role of civil society in decision-making. The network publishes information on its numerous activities across the developing world, as well as reports, documents and advocacy toolkits.

The Global Water Partnership (GWP) publishes background information on water security issues and climate change. GWP advocate Integrated Water Resources Management (IWRM) as the best route to sustainable development and management of water resources at all levels. Its website provides extensive international case studies of the partnership's work, latest news and links to related IWRM.

The Guardian Environment website publishes news and commentary on environmental issues such as climate change, energy, ethical living, food and recycling.

It also provides blogs, job listings and multimedia, including audio and video podcasts. Users can comment and are encouraged to join discussions.

The website also aggregates relevant news from members of the Guardian Environment Network, which brings together the world's best environment websites including SciDev.Net, China Dialogue, Real Science and the World Resources Institute.

IBSA, a joint project of the departments of science and technology in Brazil, India and South Africa, promotes research collaborations between scientists working on applications of nanotechnology. Its priority fields of research include health, water treatment and agriculture. India leads its flagship project on water purification.

IBSA publishes information on participating scientists from all three countries, ongoing projects, key global events and activities, and fellowships and job openings.

The International Institute for Water and Environmental Engineering (2ie) is a research and training institute specialising in water, energy and the environment. It provides educational facilities to develop research capacity for innovation and entrepreneurship on the African continent, focusing on water and environmental management; solar energy and biofuels; eco-material; and civil engineering. The 2ie website publishes information on available courses including how to apply and admission requirements, as well as upcoming conferences and workshops, jobs and internships, and access to online libraries.

The International Water Management Institute — one of the Consultative Group on International Agricultural Research centres — conducts research aimed at improving water and land management. Its website includes information about all its work, including regional profiles of areas in Africa and Asia. It also publishes details of upcoming events and recent publications.

Information and commentary are available by topic, including climate change, wetlands and gender. The website also links to other relevant tools and resources such as the Drought Information Center and the African Water Law Database.

This web portal, administered by UN-Water, offers up-to-date information on key indicators — including freshwater, industrial and agricultural withdrawal, and the percentage of people with access to water and sanitation — that are measured by UN organisations and agencies. The resource is aimed at reporters, policymakers, researchers, and the general public. Data is viewable by either country or indicator, through easy to use drop-down menus. The website also includes information about UN-related events and activities, as well as documents about water issues.

Nanowerk is a clearing house for information about nanotechnology and nanoscience. It publishes regular news on key developments and a daily feature article — written in cooperation with scientists — looking at new findings, reviewing current research or exploring interesting applications such as water treatment.

Nanowerk also hosts a database of more than 1,900 nanomaterials and links to key events, reports, documents, magazines, organisations and blogs relevant to nanotechnology. Its video library links to dozens of animations and videos about nanotech research, speeches and lectures.

This website is an international public–private consortium that provides developing countries with free or low-cost access to environmental science research. It is coordinated by the UN Environment Programme, Yale University, and science and technology publishers.

More than 100 low-income countries can access more than 4,000 peer reviewed titles (as of October 2011) on a wide range of subjects including climate change, renewable energy, forests, natural disasters and water.

This website provides a comprehensive guide to rainwater harvesting in India. It outlines various modern and traditional techniques available for collecting rainwater, highlights case studies and publishes maps and background information on key water topics, including scarcity, pollution, conflicts, and policy.