Dirty gas! Judge timing! Lying doctors! Space dust! Courage secret! Alcohol brain! Old viruses! Young puberty! And big wrists that kill! It's your Tuesday Science Watch, where we watch science—with petite bone structure, thank you!

Yikes. A 10-year-old girl in Jerez de la Frontera—a city in the Andalusia region of Spain—just gave birth, and authorities can't decide whether or not to let her family keep the baby.

A new study shows that more young girls are reaching puberty at very young ages—a significant portion of them by the age of seven. What's going on in this crazy mixed-up world? Are stereotypes to blame?

You know, the good thing about weekends is it gives you time to relax. To unwind, to stretch your legs a little, and also maybe your word count a bit. But what to do with that extra space and freedom? Recently we've noticed that the New York Times has taken to filling the weekend void with poetic, allusive,…