 First Light is a young adult science fiction and mystery novel by Rebecca Stead , first published in 2007 . The novel follows Peter , who is in Greenland with his father and mother for research on global warming , and Thea , who lives in Gracehope , an underground colony located below Greenland . First Light explains how global warming is melting Gracehope and Peter and Thea 's attempt to persuade the people to leave . The novel addresses the effects of global warming as a theme . 
 First Light <a href='drop_aux' title='1'><mark>is</mark></a>a young adult science fiction and mystery novel by Rebecca Stead , first published in 2007 . The novel <a href='uninflect' title='2'><mark>follows</mark></a> Peter , <a href='null_relcl' title='3'><mark>who</mark></a>is in Greenland with his father and mother for research on global warming , and Thea , <a href='null_relcl' title='4'><mark>who</mark></a><a href='uninflect' title='5'><mark>lives</mark></a> in Gracehope , an underground colony located below Greenland . First Light <a href='uninflect' title='6'><mark>explains</mark></a> how global warming is melting Gracehope and Peter and Thea <a href='null_genetive' title='7'><mark>'s</mark></a>attempt to persuade the people to leave . The novel <a href='uninflect' title='8'><mark>addresses</mark></a> the effects of global warming as a theme . 
First Light a young adult science fiction and mystery novel by Rebecca Stead , first published in 2007 . The novel follow Peter , is in Greenland with his father and mother fir research on global warming , and Thea , live in Gracehope , an underground colony located below Greenland . First Light explain how global warming is melting Gracehope and Peter and Thea  attempt to persuade the folks to leave . da novel address tdaeffects of global warming as a theme .