My favorite links:
Podcast and Audio downloads
Sites to learn from
Information sites
Japanese Pod 101
Where on Earth?
Online Conversion
Universe Today
Heavens Above
Logan Weather
Nature Stories
EBird
Weather Underground
UpBeet Communications
Technovelgy
Metric Conversions
Spitzer Telescope
LiveScience
Hatrack River
Military History
Space.com
US Geologic Survey
History Podcast
Commercial Space News
Gardening class
Spaceship Radio
Molecular Expressions
History According to Bob
From Stargazers to Starships
Ray Family
Soap Detectives
Space Science Group
Exercise Radio
ISS fun
8 Legged Entertainment
English Idioms
Atmospheric Optics
Science at NASA
Brain Bites
World at War
Hubble
Webcams
The Naked Scientists
New Scientist
National Zoo
Planetary Radio
HyperPhysics
Alaska Volcano Observatory
Audiobook recordings
The Why Files
Mount St. Helens
Project Gutenberg
Aeronautics Research
Yellowstone Webcams
NASACast
Archaeology Magazine
Monterey Bay Aquarium
Quirks and Quarks
eNature
RedShift Report
Hubble Site
ThoughtAudio
Darn Interesting
SkyWatch
Dr. Karl
Podcast Directories
Fun Science/Experiments
Games
Podcast Pickle
Funology
Orisinal Games
Learn Outloud
Demo Den
Hangman
ABC Radio AU
Discovery School
Fido
Exploratorium
Rubiks Cube
Countertop Chemistry
Trebuchet
Food Chemistry
Just Letters
Hands On Activities
Where on Earth?
YES Magazine
Hitchhiker's Guide...Game
World Builders
Penguin Baseball
Chemistry Experiments
Chem Experiments
NASA Education Materials
NASA Software
Newton's Apple
Amazing Paper Airplanes