Cool effect for an archive page (in this case, a staff page such as http://smtwo.org/staff/) to conserve room. Click on thumbnails and full descriptions fade in and out.

archive-staff.php

<?php

//* Remove the entry meta in the entry header
remove_action( 'genesis_entry_header', 'genesis_post_info', 12 );
remove_action( 'genesis_entry_footer', 'genesis_post_meta' );

remove_action ('genesis_loop', 'genesis_do_loop'); // Remove the standard loop
add_action( 'genesis_loop', 'custom_do_loop' ); // Add custom loop

function custom_do_loop() {
  // Intro Text (from page content)
	printf( '<article %s>' , genesis_attr( 'entry') );

	global $post;
 
	// arguments, adjust as needed
	$args = wp_parse_args(
		genesis_get_custom_field( 'query_args' ),
		array(
		'post_type'      => 'staff',
		'posts_per_page' => '-1',
		'post_status'    => 'publish',
		'cat'		 => $include,
		'orderby'	 => 'menu_order',
		'order'		 => 'ASC',
		'paged'          => get_query_var( 'paged' ) )
	);
 
	global $wp_query;
	$wp_query = new WP_Query( $args );

echo '<div class="thumbs">';
	if ( have_posts() ) : 
		while ( have_posts() ) : the_post(); 

	if( 0 == $wp_query->current_post ) {
		echo '<div class="bio_thumbs active_bio_thumb" id="' . get_the_ID() . '">';
	}
	else {
		echo '<div class="bio_thumbs" id="' . get_the_ID() . '">';
	}
		echo get_the_post_thumbnail( $post->ID, 'thumbnail' );
		echo get_the_title(); // show the title
		echo '</div>';
	}
	endwhile;
		do_action( 'genesis_after_endwhile' );
endif;

echo '</div>'; //* end .thumbs

rewind_posts();

if ( have_posts() ) : 
		while ( have_posts() ) : the_post();
	if( 0 == $wp_query->current_post ) {
			echo '<div class="bio_desc active_desc" id="' . get_the_ID() . '_desc">';
		}
	else {
		echo '<div class="bio_desc" id="' . get_the_ID() . '_desc" style="display:none;">';
	}
				echo '<h2>' . get_the_title() . '</h2>'; // show the title
				the_content();
			echo '</div>';
	}
 
		endwhile;
		do_action( 'genesis_after_endwhile' );
	endif;

}

genesis();

avenger.js

jQuery(document).ready( function() {
  jQuery('.bio_thumbs').mouseover(function () {
		jQuery(this).addClass('hover_bio_thumb');
	}).mouseout(function () {
		jQuery(this).removeClass('hover_bio_thumb');
	}).click(function() {
		jQuery('.bio_thumbs').removeClass('active_bio_thumb');
		jQuery(this).addClass('active_bio_thumb');
		var bio = jQuery(this).attr('id');
		if (jQuery('#' + bio + '_desc').hasClass('active_desc')) {
			// Do Nothing
		}
		else {
			jQuery('.active_desc').fadeOut(400, function() {
				jQuery(this).removeClass('active_desc');
				jQuery('#' + bio + '_desc').fadeIn(400);
				jQuery('#' + bio + '_desc').addClass('active_desc');
			});
		}
	});
});

functions.php

<?php
// Add this to your theme's functions file to call the javascript and set up the widget area.

//* Required Scripts
add_action ( 'wp_enqueue_scripts', 'rgc_scripts' );
function rgc_scripts() {
    if ( is_post_type_archive( 'staff' ) ) {
    wp_enqueue_script( 'rgc-staff', get_stylesheet_directory_uri() . '/lib/js/avenger.js', array( 'jquery' ) );
	}
}

// Register Widget Areas
genesis_register_sidebar( array(
'id'		=> 'after-staff',
'name'		=> __( 'After Staff', 'rgc' ),
'description'	=> __( 'This is the after staff section.', 'rgc' ),
) );

// Hooks after-staff widget area to Staff Page
add_action( 'genesis_after_loop', 'rgc_after_staff' ); 
function rgc_after_staff() {
	if ( is_post_type_archive( 'staff' ) && is_active_sidebar( 'after-staff' ) ) {
		echo '<div class="after-staff"><div class="wrap">';
		dynamic_sidebar( 'after-staff' );
		echo '</div></div>';
	}
}

rgc_cpt.php

<?php

/** Custom Post Types: place this file in mu-plugins to carry through from one theme to the next, or add this code directly to your functions.php */

add_action( 'init', 'rgc_staff_post_type' );
function rgc_staff_post_type() {
    register_post_type( 'staff',
  	array(
			'labels' => array(
			'name' => __( 'Staff', 'rgc' ),
			'singular_name' => __( 'Staff', 'rgc' ),
			),
			'exclude_from_search' => false,
			'has_archive' => true,
			'hierarchical' => true,
			'public' => true,
			'rewrite' => array( 'slug' => 'staff' ),
			'supports' => array( 'title', 'editor', 'thumbnail', 'genesis-cpt-archives-settings', 'page-attributes', 'genesis-seo' ),
		)
	);
}

style.css

/*
Staff Archive Page
---------------------------------------------------------------------------------- */

.thumbs {
  float: left;
  width: 100px;
}

.bio_thumbs {
  color: #000;
  cursor: pointer;
  margin-bottom: 15px;
  opacity: .75;
  text-align: center;
}

.hover_bio_thumb {
  opacity: .9;
}

.active_bio_thumb {
  opacity: 1;
}

.bio_desc {
  float: right;
  text-align: justify;
  width: 540px;
}

.bio_desc.active_desc {
  display: block;
}

.after-staff {
  clear: both;
  padding-top: 20px;
}

@media only screen and (max-width: 1139px) {
  .bio_desc {
  	width: 435px;
  }
}
  
@media only screen and (max-width: 1023px) {
  .thumbs,
  .bio_desc {
	width: 100%;
  }

  .bio_thumbs {
    float: left;
    width: 100px;
  }
}