Enlarge / Orbiting space station from 2001: A Space Odyssey. (credit: Sunset Boulevard/Corbis via Getty Images)

Off-Earth will amaze you: On nearly every page, it will have your jaw dropping in response to mind-blowing revelations and your head nodding vigorously in sudden recognition of some of your own half-realized thoughts (assuming you think about things like settling space). It will also have your head shaking sadly in resignation at the many immense challenges author Erika Nesvold describes.

But the amazement will win out. Off-Earth: Ethical Questions and Quandaries for Living in Outer Space is really, really good.

The shortcomings of a STEM education

Nesvold is an astrophysicist. She worked at NASA; she can easily run the equations to calculate how much fuel we need to get people, life support, and mining equipment to Mars.

Enlarge / Vintage illustration of medieval women wearing kirtles. A kirtle (sometimes called a cotte or cotehardie) is a garment that was worn by men and women in the Middle Ages. It eventually became a one-piece garment worn by women from the late Middle Ages into the Baroque period. (credit: duncan1890)

In the illuminating and entertaining blog Going Medieval, Eleanor Janega, a medievalist at the London School of Economics, upends prevalent misconceptions about medieval Europe. These misunderstandings include that people didn’t bathe (they did) and that these were the Dark Ages*. Her new book, The Once and Future Sex, is subtitled “Going Medieval on Women’s Roles in Society,” and that's exactly what she does—if by “going medieval” you intend the pop culture meaning of "dismembering in a barbaric manner" which, despite her protestations, you probably do.

Her main thrust, in the blog and in the book, is that it's easy and convenient for us to envision medieval times as being backward in every way because that makes modern times seem all that much more spectacular. But not only is this wrong, it's dangerous. Just because life is definitely better for women now than it was then, that doesn’t mean our current place in society is optimal or somehow destined. It's not.

Progress did not proceed in a straight arrow from bad times then to good times now. Maintaining that things were horrible then deludes us into thinking that they must be at their pinnacle now. Janega lays out this argument in the introduction and then spends the bulk of the text citing evidence to bolster it.

Enlarge (credit: Larry Washburn)

Jianhua Guo is a professor at the Australian Centre for Water and Environmental Biotechnology. His research focuses on removing contaminants from wastewater and the environmental dimensions of antimicrobial resistance. One of those dimensions is the overuse of antibiotics, which promotes resistance to these drugs.

Guo wondered if the same might hold true for other types of pharmaceuticals as well. His lab found that they definitely do. Specific antidepressants—SSRIs and SNRIs—promote resistance to different classes of antibiotics. This resistance is heritable over 33 bacterial generations, even once the antidepressant is removed.

So much work

Antidepressants are among the most prescribed and ingested drugs there are. They account for roughly 5 percent of the pharmaceutical market share—about the same as antibiotics—and four of the top 10 most prescribed psychiatric meds in the US.