Fish fathers exhibit signatures of 'baby brain' that may facilitate parental care behavior

Many new parents are familiar with terms like 'baby brain' or 'mommy brain' that hint at an unavoidable decline in cognitive function associated with the hormonal changes of pregnancy, childbirth, and maternal caregiving. A new study of parental care in stickleback fish is a reminder that such parenting-induced changes in the brain and associated shifts in cognition and behavior are not just for females — and they're not just for mammals either.

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High-speed microscope illuminates biology at the speed of life

The team behind the revolutionary 3D SCAPE microscope announces today a new version of this high-speed imaging technology. They used SCAPE 2.0 to reveal previously unseen details of living creatures — from neurons firing inside a wriggling worm to the 3D dynamics of the beating heart of a fish embryo, with far superior resolution and at speeds up to 30 times faster than their original demonstration.

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The dark giraffe, the new dark horse

Darker male giraffes have been found to be more solitary and less social than their lighter-colored counterparts, according to new research. A long-term study revealed that the color of male giraffes' spots more strongly relates to their patterns of social association, rather than their age, as previously thought.

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Cats are securely bonded to their people, too

Cats have a reputation for being aloof and independent. But a study of the way domestic cats respond to their caregivers suggests that their socio-cognitive abilities and the depth of their human attachments have been underestimated. The findings show that, much like children and dogs, pet cats form secure and insecure bonds with their human caretakers.

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Green light given to fruit fly's color preference

Researchers have made two unexpected discoveries. First, they found that, given a choice, fruit flies are drawn to green light early in the morning and late in the afternoon, when they are most active, and to red, or dim light, in midday, when like many humans, they slow down to eat and perhaps take a siesta.

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