Good News of the Week: An app helps the deaf community, a blood test detects cancer earlier, standard time may reduce strokes, bamboo-based plastic is making progress, and two 80-year-old women impress with remarkable athletic achievements.

Good news of the week: An endangered whale species is recovering in the North Atlantic, a sea turtle is no longer considered endangered, and young elephants could soon be protected from a deadly disease with a vaccine.

Five uplifting stories this week: from students hiking off their punishment to global clean-energy progress, a simple question about happiness, and the surprising power of quiet friendships.