The melanin in modern-day cuttlefish ink is nearly chemically identical to the pigment found in ancient cephalopods' fossilized ink sacs. Sophie Bushwick reports
Mice fed a high-fat diet make new cells in the hypothalamus, which may increase the desire to eat more. Karen Hopkin reports
Babies quickly lost interest in a video when the material they were confronted with was either boringly simple or stultifyingly complex. Cynthia Graber reports
The higher their social status, the less likely male baboons are to fall ill and the faster they recover from both illness and injury. Sophie Bushwick reports
A study of stockbroker data from the mid-'90s shows that management can affect women's pay even when that pay is based solely on commission. Cynthia Graber reports
Chilling or heating bitter, sour, sweet and astringent solutions changed their flavor intensity in different ways. Sophie Bushwick reports
Mice that ate a high-fat diet within an eight-hour period daily gained less weight than mice that ate the same amount of food over the entire day. Cynthia Graber reports
Santino the chimp collects and conceals rocks to throw at spectators at his zoo in Sweden. Karen Hopkin reports
When warned of a loud noise, a false killer whale reduced its hearing sensitivity in anticipation of the sound. Sophie Bushwick reports
One way to limit the search for Earth-like exoplanets is to figure out where they cannot exist and eliminate those systems. Cynthia Graber reports
A chimpanzee's tool choice for cracking nuts depends on its community. Sophie Bushwick reports
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