Skip to Main Content


See All Hours


One Moment...

See Average Occupancy

Earth & Environmental Sciences Research Guide

Useful Websites

Integrated Taxonomic Information System

Here you will find authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

Comparative Climate Data for the US

From Cornell's Northeast Regional Climate Center

ECOLEX: the gateway to environmental law

The ECOLEX database includes information on treaties, international soft-law and other non-binding policy and technical guidance documents, national legislation, judicial decisions, and law and policy literature.


US Environmental Protection Agency.

IRIS: Incorporated Research Institutions for Seismology

Source for seismic data and other information.

NASA: Global Climate Change

Data, images, and explanations on the mechanism and effects of climate change.

National Climatic Data Center

Climate data from NOAA.

USGS: Publications

Maps, aerial photographs, reports and more from the US Geological Survey.

Encyclopedia of Life

The Encyclopedia of Life (EOL) is an ambitious project to organize and make available via the Internet virtually all information about life present on Earth. At its heart lies a series of Web sites—one for each of the approximately 1.8 million known species—that provide the entry points to this vast array of knowledge.

Tree of Life

The Tree of Life Web Project is a collection of information about biodiversity compiled collaboratively by hundreds of expert and amateur contributors. Its goal is to contain a page with pictures, text, and other information for every species and for each group of organisms, living or extinct.

Crop Index

Crops are listed alphabetically by genus and common name.

Weed Identification

Key for identifying weeds species.


Standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.


A collection of 359,733 photos of plants, animals, fossils, people, and landscapes from around the world.

Common Trees of Pennsylvania (PDF)

This selection of 57 native, and 5 introduced trees is organized according to leaf shape and arrangement. Each tree is identified by popular name familiar to Pennsylvanians and its complete scientific name.


Blough-Weis Library

514 University Avenue

Selinsgrove, PA 17870 | 570.372.4160

Susquehanna University


Facebook          Instagram      TikTok      Roger     

Send Us Feedback | © Blough-Weis Library | LibApps Login