Subject(s): Engineering, computer software, artificial intelligence, and space science. Best for: Assignments that require credible, scholarly sources or images. Includes: Scholarly journals, magazines, and images.
Subject(s): Environmental topics such as pollution, carbon markets, sustainable agriculture, renewable energy, and recycling. Best for: Starting your research or choosing a topic. Includes: Wikipedia type articles, scholarly journals, magazines, news, statistics, primary sources, and podcasts.
Subject(s): Environmental topics such as climate change, green building, sustainable agriculture, renewable energy, and recycling. Best for: Assignments that require credible, scholarly research. Includes: Scholarly journals and magazines.
"A dedicated online resource for the engineering, technical, industrial and manufacturing communities. Visitors to www.globalspec.com can browse products and suppliers, services and consultants in areas ranging from flow control and fluid transfer, to manufacturing and processing equipment, to motion and controls, and more."
An independent, non-profit organization, the NAE aims to promote the engineering profession and provide guidance to government agencies. Of particular note are their publications and reports, freely accessible online.