The state of Illinois has officially resolved to designate September 15 as Carbon Day, a day on which the state will urge people to take steps towards reducing their carbon footprint.  On this same day, the first annual Carbon Day festival will be held at Grove Five in Lincoln Park at Clark and Armitage. This year’s theme is carbon-neutral transportation and infrastructure. The festival will feature interactive demonstrations on different ways to be carbon-neutral, including tree planting, composting and solar energy. “It’s not hard to be more eco-conscious,” says the event’s  coordinator, Brae Hatteway. “We are geared towards giving individuals what they need to take a more proactive role in having a sustainable lifestyle.” Chicago’s own The Giving Tree Band will headline the festival, which corresponds with the release of their new, completely carbon-neutral album, “Great Possessions.” The festival will also feature Cobalt & the Hired Guns.