Using the genome-editing technology CRISPR, researchers can make targeted cuts to the genome or insert useful genes, called a gene knock-in, and they have done it with the cattle SRY gene, responsible for initiating male development, into a bovine embryo.

This first demonstration of a targeted gene knock-in for large sequences of DNA via embryo-mediated genome editing in cattle will mean it produces male offspring 75 percent of the time.

That's not to increase sexism, it's a benefit because male cattle are about 15 percent more efficient at converting feed into weight gain than females. That keeps costs low, especially on the checklist now when we have seen how precarious food supply can be for the poor, and it's better for the environment.

A recent survey results analysis sought to quantify the happiness of married, formerly married and single people at the end of their lives - to find out just how much love and marriage played into overall well-being. 

The 7,532 participants were surveyed periodically from ages 18 to 60 and the psychologists sought to determine who reported to be happiest at the end of their lives.

In Australia, native people have long contended that  native stingless bee honey had special health properties. Like the well-known Apis mellifera honeybees, stingless bees live in permanent colonies made up of a single queen and workers, who collect pollen and nectar to feed larvae within the colony.

And a new paper does find that nearly 85 percent of its sugar is trehalulose, not maltose, and trehalulose has a lower glycemic index, but claims that makes it healthier are going to deceive the public. Sugar is still sugar. Claims that native peoples who eat a lot of it have lower diabetes ignore too many other confounders to count. 

We're going to learn a lot more about how bats do all of the things they do, in part due to the work of the Bat1K consortium to sequence the genome of six widely divergent living bat species.

Is it possible to predict nonlinear behavior, such as when a protest will become a riot? Perhaps, though parameters bring special challenges.

We've seen the weaknesses of numerical modeling when it comes to disease epidemiology, and many of those concerns were evident before SARS-CoV-2 took the world by storm. In Chile of 2019, social unrest disrupted the daily routines of many citizens so scholars recently combined well-known epidemic models with tools from the physics of chaos and interpreted their findings through the lens of social science as economics.

Experimental physics is about investigating the world in a quantitative manner, by exploiting our technology to carefully map the wealth of phenomena that make planets turn around stars, atoms stick together, and hearts to beat. All of that can be understood by creating models of the underlying physics processes. These models need to be fed with input parameters which we must measure.

Leeches are found on every continent in freshwater habitats where there is little flow. They are popular bait for fishing, and doctors continue to use them in medical treatments. Environmentalists have even been using them to advance their beliefs that trace levels of "endocrine disrupting" chemicals are harmful.