It's all the result of having two X chromosomes.

BIG QUESTIONS
No, but it does cause temporary damage that can become permanent with alcoholism.
As hard as bees toil during their peak seasons, you’d think the colder months would bring some kind of hibernation or rest, even if it means snowy death.
Fine fecal dining, explained.
The ant fortresses you find on your lawn have a number of defenses.
As it turns out, it’s a relatively new designation.
The story of how department stores taught us about language and prestige.
Playing out of key may not be the most embarrassing thing a guitarist has to endure after all.
Those ubiquitous Greek-themed coffee cups have an unlikely father: a Czechoslovakian Holocaust survivor.
Mostly so they don't die. In 2011, Sonya “The Black Widow” Thomas won the first-ever Women’s Division of the Nathan’s Hot Dog Eating Contest by downing 40 dogs in one sitting. That’s 12,360 calories consumed in 10 minutes …
What’s going on here?
Your dog is laughing, you just couldn't tell.
"It's an enigma, wrapped in a pie crust. Every day, it feels a little more lost to history," -Jeff Ruby, co-author of Everybody Loves Pizza.