Biological Sciences   Tags: biol, biological_sciences, biotechnology, ecology, evolution, genetics, science  

Daphnia, the water flea. 31,000 or so: humans have 20,000 to 25,000.

High-resolution brain scans on a sample of 29 weekend binge drinkers, aged 18 to 25, found that binge-drinking – consuming four or more drinks in one incident for females and five or more drinks for males – was linked to cortical-thinning of the pre-frontal cortex, the section of the brain related to executive functioning such as paying attention, planning and making decisions, processing emotions and controlling impulses leading to irrational behavior.