I read email as frequently as possible and will respond to emergencies as quickly as I can---if I am traveling, I will contact you as soon as possible.
My voicemail (617-253-6048) has a message saying "not to leave a message." In emergencies, please ignore this request. However, I do not typically listen to my voicemail when traveling. Email is more reliable.
Rachel Kemper will know how to contact me and I maintain frequent contact with her. Her email address is rkemper@mit.edu and her phone number is 617-253-6936
It is possible that I will be able to receive a text message from you via the web. You can send a short message using this URL
If you are unable to contact Ms. Kemper, then, for emergencies you can contact my spouse: Marty Carter carterm@bu.edu 617-353-2645. But, please use these only for true emergencies.