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.

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 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.

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.

This website provides information on the Ramsar Convention of Wetlands of International Importance, an intergovernmental treaty that provides guidance for member countries' efforts to maintain the ecological character of wetlands and plan for their sustainable use. The website provides an overview of the convention and access to official documents including technical and management guidelines. It also makes available related publications such as handbooks, conference proceedings and reports, as well as news, activities, photographs and a list of useful contacts.

The Water Channel produces videos about water in the developing world. Topics covered include climate change, agriculture, early warning systems for floods and soil moisture conservation.

It also publishes news about its activities and links to similar websites that cover water issues in the Arab world and the links between water and climate change.

The aim of the Water Governance Programme for Arab States (WGP-AS) is to improve the use and management of scarce water resources in Arab countries by promoting an integrated approach and supporting the achievements of the Millennium Development Goal 7.

It also addresses cross-cutting areas such as adaptation to climate change, trans-boundary water management and gender mainstreaming. The website publishes free-to-access reports, events, as well as information on past and current projects.

WaterWiki is an interactive knowledge exchange and collaboration platform for the global water community, which aims to connect professionals to knowledge in the context of the UN system. It provides an online platform for sharing experience and lessons learned, with the overall aim of improving coordination and inter-agency cooperation in the water sector.

The website publishes reports, video, case studies from around the world, as well as links to useful organisations. Users can add new content and edit existing content in real-time.