We have something here for whatever science you teach!
All links are organized by category.
Free webinars from the Cornell Laboratory of Ornithology - http://www.birdsleuth.org/free-webinars/
Every month from August 2017 to June 2018, the Cornell Laboratory of Ornithology provides free webinars.
These are 50 minutes in length with 10 minutes for questions/answers.
Archived webinars are also available for your viewing.
Details, schedule, topics and registration information are found here.