"It might take the monarchs as many as four to five generations to complete the journey all the way back up to Canada," says Sarina Jepsen, who directs the endangered species program for the Xerces Society.

Sarina Harper, a 19-year-old student at Virginia Tech, was faced with a tough dilemma when she first started college in 2015—pay rent or pay to turn in her chemistry homework.

Sarina Harper, a 19-year-old student at Virginia Tech, was faced with a tough dilemma when she first started college in 2015 — pay rent or pay to turn in her chemistry homework.