Follow the Email forwarding link under Managing your account. Make sure Forward your mail to another email account under Forwarding. Enter the email address of the Gmail account under Where do you want your messages to be sent? Optionally, check Keep a copy of forwarded messages in your Windows Live Hotmail inbox. If this option is not enabled, no trace of forwarded emails will remain at your Windows Live Hotmail account. Click Save. Optionally, set up Gmail to send emails using your Windows Live Hotmail address.
The only way to study the entire range of infrared (as well as gamma rays, xrays, UV) is to place telescopes in space well above the atmosphere. Only some (not all) of the IR radiation between 1 and 40 microns makes it to the Earth's surface. The rest is absorbed by our atmosphere primarily by water vapor. IR is also absorbed to a lesser degree by carbon dioxide and oxygen molecules.
Any of the atmospheric gases that contribute to the greenhouse effect by absorbing infrared radiation produced by solar warming of the Earth's surface. They include carbon dioxide (CO2), methane (CH4), nitrous oxide (NO2), and water vapor.