Biology: Overview

The primary database for research in medicine and other biosciences. From the National Library of Medicine and National Institutes of Health.

Excellent place to start a literature review. Get peer-reviewed journals, articles, book chapters on a wide variety of scientific topics, including the life sciences and health topics, as well as engineering content related to biology, including chemical engineering.

Comprehensive index of the major journal literature in the sciences, social sciences, and humanities.

Academic journals published by Nature. Covers biological sciences, earth sciences, physics, chemistry, mathematics, engineering, and computing sciences.
Also includes news and commentary from Nature, a leading scientific jobs-board (Naturejobs), and a grant-finder tool.

Human's impact on the environment

Subjects include plant and animal sciences, forestry, entomology, soil and water resources, agricultural economics, agricultural engineering, alternative farming, and food and nutrition.

Science In Context provides contextual information on significant science topics. This database shows how scientific disciplines relate to real-world issues. This is a good resource for gaining a foundational understanding of a variety of scientific concepts.