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Top stories: Freezing eggs, burning fat, and the world’s first warm-bodied fish
(Left to right) NOAA Fisheries West Coast; NIAID; Lex Van Lieshout/EPA/Newscom

Top stories: Freezing eggs, burning fat, and the world’s first warm-bodied fish

Rats forsake chocolate to save a drowning companion

We’ve all heard how rats will abandon a sinking ship. But do they try to take their buddies along with them? A new study shows that rats will, indeed, rescue their distressed pals from the drink—even when they’re offered a chocolate treat instead.

Scientists discover first warm-bodied fish

Scientists have discovered the first fish that can keep its entire body warm! The opah lives in deep, cold water, but it generates heat from its massive pectoral muscles. And it conserves that warmth thanks to body fat and the special structure of blood vessels in its gills.

Could turning out the lights help you burn fat?

When mice are exposed to lots of artificial light every day, they burn less fat and pack on the pounds. Scientists are still working out precisely what this discovery means for humans, but if you're trying to lose weight, it might not be a bad idea to turn off the lights.

Sea level rise accelerating faster than thought

If you’re still thinking about buying that beach house, think again. A new study suggests that sea levels aren’t just rising; they’re gaining ground faster than ever. The findings contradict earlier work that suggested that sea level rise had actually slowed in recent years.

Discovered a disease? WHO has new rules for avoiding offensive names

The World Health Organization (WHO) has released new guidelines for naming diseases. Places, people, animals, jobs, food, and “terms that incite undue fear” are out. Instead, WHO says, those who name diseases should use more neutral, generic terms, like severe respiratory disease or novel neurologic syndrome.

How long should a woman wait to freeze her eggs?

Scientists say they've figured out—taking economic and biological considerations into account—the best age for women to freeze their eggs if they want to get pregnant as late in life as possible. The magic number, it turns out, is 37.