Author: Holly Fortini

To humans, aging can seem to be inextricably linked with physical decline. In 1975, “on a whim,” the photographer Nicholas Nixon decided to illustrate this process. That year he took a picture of his wife and her three sisters standing together, shoulder-to-shoulder; and every year after, for four decades, they stood for a picture in […]

Is there a biochemical reason that extreme weather makes us happy?

What a waste are two thumbs on the space bar. There they sit, nearly flaccid, punctuating the end of each word, awaiting the call to crack stone or to use sharp flakes to incise wood. It is easy to think of other traits as making us human. We talk, use metaphors, empathize, follow fashions, laugh, play […]

In his Oscar acceptance speech, Leonardo DiCaprio said, “Making The Revenant was about man’s relationship to the natural world.” Perhaps the film’s most gripping illustration of this was when a grizzly bear nearly mauls DiCaprio’s character, an American fur trapper, to death. To be eaten by a predator, after all, may be the most apt […]

Given how hazardous greenhouse gases (GHGs) are to our atmosphere and climate, it is perplexing to find hardly anyone talking about how those gases are measured. Even among those who do, you seldom spot anyone who mentions—amid the small fonts and tables, graphs, and charts—how data is collected in the field. Why? Because the tools […]

Milton Wainwright believes he’s seen ET. In Earth’s upper atmosphere, he claims to have found evidence for panspermia—the hypothesis that life travels through the cosmos via meteoroids and other objects. A microbiologist and astrophysicist at the University of Sheffield, Wainwright sends large balloons up to the stratosphere, as high as 25 miles above the planet’s […]

We know when people usually get married. We know who never marries. Finally, it’s time to look at the other side: divorce and remarriage. The chart below shows cumulative rates for different groups of people in the United States, based on 2014 American Community Survey, 1-year estimates. For example, by age 60, among the employed in 2014 […]

On February 3, Cliff Burgess, a physicist at McMaster University, emailed some of his colleagues about an exciting rumor—a possible discovery—that, if verified at a press conference later today, would mean a “Nobel prize is coming someone’s way.” According to “spies,” Burgess said, an instrument called LIGO (the Laser Interferometer Gravitational-Wave Observatory) had apparently observed […]

The main elements of the Big Bang model are “easily listed,” says Jim Peebles, the Albert Einstein Professor Emeritus of Science at Princeton. The model holds that the large-scale structure of the cosmos is expanding faster and faster and that, on average, the universe looks close to the same no matter where you look. […]

Rommel Canlas/Shutterstock Edward Hall, an American anthropologist, first defined “personal space” in the mid-1900s, when he noticed that its size varied widely from culture to culture: Southern Europeans and Latin Americans, for example, were “closer talkers”, while Northern Europeans and North Americans were more stand-offish. Personal space, Hall surmised, was a form of social communication, […]