Combined stock repurchases by U.S. public companies have reached record levels, a Reuters analysis finds, but as the recent history of such iconic businesses as Hewlett-Packard and IBM suggests, showering cash on shareholders may exact a long-term toll. ... A Reuters analysis shows that many companies are barreling down the same road, spending on share repurchases at a far faster pace than they are investing in long-term growth through research and development and other forms of capital spending. ... Almost 60 percent of the 3,297 publicly traded non-financial U.S. companies Reuters examined have bought back their shares since 2010. In fiscal 2014, spending on buybacks and dividends surpassed the companies’ combined net income for the first time outside of a recessionary period, and continued to climb for the 613 companies that have already reported for fiscal 2015. ... In the most recent reporting year, share purchases reached a record $520 billion. Throw in the most recent year’s $365 billion in dividends, and the total amount returned to shareholders reaches $885 billion, more than the companies’ combined net income of $847 billion. ... Among the 1,900 companies that have repurchased their shares since 2010, buybacks and dividends amounted to 113 percent of their capital spending, compared with 60 percent in 2000 and 38 percent in 1990. ... For decades, the computer hardware, software and services company has linked executive pay in part to earnings per share, a metric that can be manipulated by share repurchases.

Central to this concern is the prospect of an “intelligence explosion,” a speculative event in which an A.I. gains the ability to improve itself, and in short order exceeds the intellectual potential of the human brain by many orders of magnitude. ... Such a system would effectively be a new kind of life, and Bostrom’s fears, in their simplest form, are evolutionary: that humanity will unexpectedly become outmatched by a smarter competitor. He sometimes notes, as a point of comparison, the trajectories of people and gorillas: both primates, but with one species dominating the planet and the other at the edge of annihilation. ... Bostrom is arguably the leading transhumanist philosopher today, a position achieved by bringing order to ideas that might otherwise never have survived outside the half-crazy Internet ecosystem where they formed. He rarely makes concrete predictions, but, by relying on probability theory, he seeks to tease out insights where insights seem impossible. ... The people who say that artificial intelligence is not a problem tend to work in artificial intelligence.

Since taking over in 2006 from the outsider Knight first recruited for the job, Parker has overseen a more than doubling of Nike’s sales. To outward appearances, Knight and Parker are a study in contrasts. Knight is an MBA and still an irascible presence around Nike’s Beaverton, Ore., corporate campus. Parker is a soft-spoken shoe designer, known for a thoughtful if demanding management style. ... Parker was one of Nike’s earliest recruits—he joined a design outpost in New Hampshire in 1979—and has succeeded at every task assigned to him since. ... Parker’s meticulous approach to product development, known as “design thinking,” is all the rage, thanks to the acclaim of Apple’s products under its famed designer Jony Ive. Parker remains committed to his original craft: He still noodles on two limited-run sneaker lines with famed Nike designer Tinker Hatfield, one of them with Nike spokes-icon Michael Jordan and the other with Japanese stylemaker Hiroshi Fujiwara. ... Parker equates his managerial style with being an editor, with his process focused on helping subordinates hone their ideas. He even edits himself.

In November 2012, Salvador Alvarenga went fishing off the coast of Mexico. Two days later, a storm hit and he made a desperate SOS. It was the last anyone heard from him – for 438 days. ... Floating across the Pacific Ocean, watching the moon’s light ebb and flow for over a year, Alvarenga had battled loneliness, depression and bouts of suicidal thinking. But surviving in a vibrant world of wild animals, vivid hallucinations and extreme solitude did little to prepare him for the fact that he was about to become an international celebrity and an object of curiosity. ... Without bait or fish hooks, Alvarenga invented a daring strategy to catch fish. He kneeled alongside the edge of the boat, his eyes scanning for sharks, and shoved his arms into the water up to his shoulders. With his chest tightly pressed to the side of the boat, he kept his hands steady, a few inches apart. When a fish swam between his hands, he smashed them shut, digging his fingernails into the rough scales. Many escaped but soon Alvarenga mastered the tactic and he began to grab the fish and toss them into the boat while trying to avoid their teeth. ... He was mastering the art of turning his solitude into a Fantasia-like world. He started his mornings with a long walk. “I would stroll back and forth on the boat and imagine that I was wandering the world. By doing this I could make myself believe that I was actually doing something. Not just sitting there, thinking about dying.” With this lively entourage of family, friends and lovers, Alvarenga insulated himself from bleak reality.

Inside the rotunda of the Tehran Museum of Contemporary Art, a circular walkway spirals down from the street level, like an underground version of Frank Lloyd Wright’s Guggenheim Museum in New York. A series of galleries branches out from there, giving up astonishing secrets from one of the finest—if forgotten—collections of 20th century art in the world. ... The galleries are a ghost town, except for a dozen photography students who, for the $1.50 price of admission ... Built by Shah Mohammad Reza Pahlavi’s wife, Empress Farah Pahlavi, just before the 1979 revolution, the Tehran Museum of Contemporary Art amassed the greatest collection of modern Western masterpieces outside Europe and North America ... As revolutionary mobs protested in the streets in January 1979 after the shah and his wife fled, the museum spirited its 1,500 works of Western art into a basement vault. ... The collection’s survival is part of the larger Iranian paradox—the struggle of one of humanity’s oldest and most refined civilizations to overcome an historic spasm of fundamentalism and xenophobia.