Help me construct a catchy, yet scientifically accurate, headline for an article on the latest discovery in renewable bio-energy, while carefully handling the ethical dilemmas surrounding bio-energy sources. Propose 4 options.

1 . " Re volution ary Bio - E ner gy Break through : Har ness ing the Power of Al ga e for S ust ain able Future " \n 2 . " Un lock ing the Pot ential of Bio - E ner gy : Ex pl oring the Lat est Adv ances in Ren ew able Energy " \n 3 . " B io - E ner gy : The Eth ical D ile m ma of Using Organ isms to Power Our Future " \n 4 . " From Lab to Land s cape : The Promise and Per il of Bio - E ner gy as a Ren ew able Resource " </s>