Learn how to identify a male and female tree swallow. Find out about their nests, song, range map and what tree swallows eat.

The violet-green swallow is a shiny green flier that swoops and soars in the West. Discover where to find them, what they eat ...

he Society of Environmental Toxicology and Chemistry (SETAC) publishes two journals: Environmental Toxicology and Chemistry (ET&C) and Integrated Environmental Assessment and Management (IEAM).

This Green Earth is a weekly, hour-long program that focuses on the environment and environmentalism. Host Claire Wiley explores the science, politics, economics and ethics behind the environment, ...

The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. Penguins in ...