All Carnegie Library of Pittsburgh locations will be closed on Tuesday, December 24th and Wednesday, December 25th in observance of Christmas. All locations will reopen on Thursday, December 26th.
Ask Dr. Math
If you have a math question of any level, this is the place to get the answer!
Everything you ever wanted to know about cells, all in one place. Includes info on cells, microbiology, and immunology. Check out the great animation of cell mitosis and meiosis.
FactMonster Homework Center: Mathematics
Conversion calculater, formulas and more.
General Chemistry Online
General Chemistry Online from Frostburg State University provides interactive chemistry help with compounds, reactions, and even quizzes to test your knowledge.
HighWire Press Stanford University
Find peer reviewed articles on diverse topics: biology, chemistry, environmental science, and more.
HippoCampus provides high school and college students with multimedia help on a variety of science and math topics. Having trouble understanding your physics lesson? Watch a video demonstration on HippoCampus for a different take on the subject.
The Physics Classroom Tutorial
Find clear explanations of concepts in physics and help with problem-solving and experiments.
Access abstracts and full research articles from this peer-reviewed journal published by the Public Library of Science (PLoS). PLoS is a nonprofit organization of scientists and physicians committed to making the world's scientific and medical literature a public resource.
An online magazine featuring quick takes on the latest research on a wide variety of science topics.
WebMath covers K-8 math, general math, Algebra, Trig & Calculus, etc, and doesn't only give the answer but shows how to arrive at it. Also has conversion calculators, personal finance math, and "everyday math".