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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Russia's call-up splits EU; Ukraine says it shows weakness

Russia's rush to mobilize hundreds of thousands of recruits to staunch stinging losses in Ukraine is a tacit acknowledgement that its 'army is not able to fight,' Ukraine's president said Sunday, as splits sharpened in Europe over whether to welcome or turn away Russians fleeing the call-up.

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