This week's radio outside of the studio: we celebrate Earth Day with a crew of people who think every day is Earth Day--we visit Northeast Trees on planting mission in the Mar Vista Gardens Housing Projects and ride a bike to power a dj party with Movable Parts at Ciclavia.

This episode, we visit with Afro-futurist filmmaker Cauleen Smith as she brings her slide-show performance drawn from archives of and admiration for Sun-Ra to Los Angeles. It's national poetry month, and we have some choice recordings of Mr. Ra/Mystery, the cosmic polymath, composer, and poet.

This week, we take a walk with the "old man of water", Waterkeeper's Conner Everts to find concrete solutions to problem of a concrete city that pours most of its water right back into the ocean instead of saving it for a non-rainy day.

On this episode, we spend the show loitering at City Hall with artist Chris Cuellar who is part of a gallery show at Los Angeles City College called "Come in; We're Open" --a collection of conversations about social practice and a project of Performing Public Space. Also on the show: the day-after the dislocation of Occupy L.A.

This episode: "When you are at kilometer 30...that's when the pain and the absurdity of the marathon come into focus."

"Ever since starting to work on this guide, whenever I see a plain, industrial building, I just have to wonder: who's being screwed behind those frosted, black windows?"

This week's Hear in the City wraps up our series on natural elements in the the urban space with "Water" by Radiosonideros collective featuring the poetry of Lewis McAdams, co-founder of Friends of the Los Angeles River. We also offer you a guide to a proposed landmark urban plan on the L.A. River and a meditation on the multiplicity of love.

Next in our series of audio art honoring natural elements in the urban space: Earth.

We spend most of the program exploring the fundamental issues that arise when a piece of land is set aside for public park use at a time when disinvestment in open and un-exploited spaces has become the norm in the State of California.

This week, we visit Mexico City--once the dirtiest metropolitan area in the Americas-- now the recipient of a prize for clean air and sustainable transport. Plus, audio poetry by Clare Fox and responses from our Pit Bull show.

The number one dog breed euthanized in shelters in cities in the U.S. is the Pit Bull Terrier. On this episode, we travel to two spaces in the City to visit extraordinary people who are committed to difficult dogs and helping society to deal with them. Featuring Larry Hill of Puppy Imprinters and Lori Weise of the Downtown Dog Rescue.

The 2012 U.S. presidential election had been decided. California saw record turn-out. Some Angelinos went beyond the call of voter duty and hit the pavement in Las Vegas to make sure to get out the vote in our neighboring swing-state. Listen to the show to hear how it went.