1) Michael Catanzaro emails Myron Ebell to reschedule their meeting that day due to being busy with climate issues on Capitol Hill.
2) Myron Ebell replies, asking Catanzaro to call to discuss what is going on, and provides his cell phone number as an alternative to reach him.
3) The original email from Catanzaro notes he needs to reschedule their meeting that day because climate issues are consuming all his time.