functions.php

<?php

/** Add Project Information After Content */
add_action ( 'genesis_sidebar', 'mmi_sing_project_side' );
function mmi_sing_project_side() {

	echo '<div class="mmi-sidebar">';
	echo '<section class="widget">';
	echo '<h4 class="widgettitle">Participate In This Project</h4>';
	$participants = get_post_meta(get_the_ID(), 'participants_needed', false);
	echo implode( ', ', $participants );
	echo '</section>';
	echo '</div>';
	
}