Bruce Grierson

Are humpback whales the Justice League of the oceans?

As Bruce Grierson reports in this fascinating piece, clear-cut logging has much deeper repercussions than simply denuding the land of trees — it also affects a critical underground ecosystem of dissolved rock called karst as well as the organisms that depend on it.

Olga Kotelko, a 91-year-old track star, is considered one of the world’s greatest athletes, holding 23 world records, 17 in her current age category, 90 to 95. “Well, I still have the energy I had at 50,” she said. “More. Where is it coming from? Honestly, I don’t know. It’s a mystery even to me.”