Subscribe to the air-mail list: 

Air-mail is an Internet email distribution list. It is one of the best ways to stay abreast of air-related issues. If you sign up you will receive several posts a day, including action alerts and up-to-date, in-depth info.

One way to subscribe to air-mail:

1) Make sure your web browser mail preferences are filled out properly (e.g. under the Edit/preferences menu in
Netscape)
2) Start a new email message to Econet by clicking on the following: Majordomo@igc.org 
3) Don't put anything in the subject line of the message. In the body, put

     subscribe airmail youraddress

For example, if your preferences are filled out and you are signing up from the account where you want to receive the articles:

     subscribe air-mail

To sign up some other account, for instance of someone who might stand to learn more about environmental issues:

     subscribe wisc-eco president@whitehouse.gov

Upon successfully subscribing you will be sent further instructions, e.g. how to unsubscribe.