The not-quite human voice that emanates from your phone or GPS or other device is, more often than not, female. It's an obvious pattern, and one that many have claimed has a simple technical explanation: Female voices are easier to understand. The only problem is that it's not true.
A handy explainer for the oft-cited (but rarely elucidated) factoid that every single person on Earth was once female — or, at a minimum, gender-neutral.
The spread of different languages in ancient times might seem like a difficult thing to track, but a big part of the story is actually hidden in our genes. Here's the twist: language change is a male-dominated phenomenon.
If you're a vertebrate female, chances are that you're attracted to the color red, and that includes humans. It's one of the oddest facts in all biology - no matter what the species, women seem to love red.