I believe I saw this short scifi film on Youtube, specifically DUST. Others think they saw it on FB.  Plot – earth is  about to die; last ditch effort many, many ships are sent out to search for a new planet where humanity can live; the last viable ship finds one just as his supplies are about to run out; it’s perfect, earth like before humanity screwed it up; he has a signaling device to inform earth; he is by a stream; he thinks about the paradise he’s found; he thinks about what humanity did to earth; he does not tell earth saving paradise and condeming humanity to its fate on earth.  I really want to find this film.  Any help?