Solar power

 Hour two, on day three, of Midday's special series Power Ahead continues looking at natural gas and solar power. The focus of this hour is solar energy. Our guests this hour are Brad Heavener, Environment Maryland, Alexis Madrigal, senior editor at The Atlantic and author of Powering The Dream: The History and Promise of Green Technology and Vadim Polikov, president of Maryland-based Astrum Solar, installer or residential and small commercial solar panel systems.