Content warning: This story includes references to death by suicide. Evan Hansen was born to play football. A strong, rambunctious kid, he started playing sports year-round as early as he could. “He was very selfless, always willing to sacrifice himself for the betterment of the team,” says his father, Chuck …

On a spring day in 1978, a fisherman caught a tiger shark in the lagoon surrounding Enewetak Atoll, part of the Marshall Islands in the north Pacific. That shark, along with the remains of a green sea turtle it had swallowed, wound up in a natural history museum. Today, scientists …