Criminal justice activists are criticizing the City Department of Investigation's review of the NYPD's database of people with suspected gang ties, as many as 3,000 low income homeowners could qualify for free solar panels. And finally, with Earth Day coming up on Saturday, we're taking a moment to reflect on the gardening pioneers who work to transform garbage filled lots in New York City into lush neighborhood green spaces. WNYC’s George Bodarky went to the Liz Christy Garden on the Lower East side which is celebrating its 50th anniversary.