In miscellany this morning:

We’re more fascinated than we should be with the story of an isolated tribe killing a foreign missionary with bows and arrows. The killing took place on a remote island in the Andaman Sea controlled by India as the American tried to land and meet with members of a tribe with which there has been little-to-no contact for centuries, perhaps millennia. Start here with the initial news report and then learn about the islanders’ “history of guarding their isolation.” Explore excerpts from the dead missionary’s last letters as he shuttled back and forth to the island, looking for a way on shore. Then meet the last scholar to really interact (for mere hours) with the tribe, one T.N. Pandit. Should they be left alone? Is it arrogance to bring them, against their will, into the modern age? Paternalistic to guard their isolation?

Regular exercise may keep your body 30 years ‘younger’ –study: “The muscles of older men and women who have exercised for decades are indistinguishable in many ways from those of healthy 25-year-olds,” the New York Times writes.

Disney released the first trailer for its remake of 1994’s The Lion King. You can watch it here (runtime: 1:30).