Dear Colleagues, Today is start of the second-half of the calendar year and also start of the new fiscal year - how time flies! Being our School's Centennial, 2011 is a special year for us. I hope that you are having an enjoyable and productive summer - have a safe and happy July 4th weekend! Arvind Arvind Varma R. Games Slayter Distinguished Professor Head, School of Chemical Engineering Purdue University