Testosterone promotes both aggression and 'cuddling' in gerbils, study finds

Research conducted with Mongolian gerbils, rodents that form lasting pair bonds and raise their pups together, has revealed how testosterone influences the neural activity of oxytocin cells, the so-called love hormone associated with social bonding. (Aubrey Kelly) Research conducted with Mongolian gerbils, rodents that form lasting pair bonds and raise their pups together, has revealed how testosterone influences the neural activity of oxytocin cells, the so-called love hormone associated with social bonding. (Aubrey Kelly)

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Retreating Russians leave their comrades' bodies behind

Russian troops abandoned a key Ukrainian city so rapidly that they left the bodies of their comrades in the streets, offering more evidence Tuesday of Moscow's latest military defeat as it struggles to hang on to four regions of Ukraine that it illegally annexed last week.

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