What A Rodent Brain Shows Us About Love–And LossLove has the reputation of being a fairly unique human emotion. If we’re lucky, we can experience lots of love in our lives: with romantic partners, children, family, friends. But with love comes the possibility of another, less desirable emotion: heartbreak.Neuroscientists at the University of Colorado Boulder have found that these feelings seem to actually leave a mark on the brain, with dopamine and other feel-good chemicals flooding to the brain’s reward centers when lovers are reunited.The source for this data may be surprising: prairie voles, tiny rodents that are among the small percentage of mammals that form monogamous pair bonds. By studying their brains when the voles were united with their mates, researchers were able to pinpoint this dopamine flood that they suspect happens in humans’ own brains under the same conditions.When the voles were separated for four weeks—long enough for them to consider their pairing “over” and find new mates, the broken-up voles had much more muted dopamine response when reunited. Researchers say that could be good news for heartbroken humans because it shows the brain could have something of a “reset” mechanism that allows individuals to go on and form new bonds.Joining Ira to talk about this research is Dr. Zoe Donaldson, associate professor of behavioral neuroscience at the University of Colorado in Boulder.If You Rolled Colorado Out Into A Brownie, How Big Would It Be?The surface area of Colorado is 104,094 square miles, according to the US Geological Survey, making it the 8th largest state in the country.But the state, unlike our neighbors to the east, has a lot of extra geographical stuff — like mountains.One Coloradan who loves to spend time in those big hills wondered if our dear state wasn’t getting a bit short-changed. Denver-based photographer and editor Howard Paul also happens to love baked goods. So when he posed his question to Colorado Wonders, he couldn’t help but combine his two passions.Paul had a hunch that such a squishing would make Colorado the largest state in the lower 48. Bigger than Texas. Smaller than Alaska. (For whatever it’s worth, this numerically-challenged reporter thought that was an eminently reasonable guess.)The first bit of due diligence was to research if this quandary had been approached before. Well, what do you know, the headline of a March 2005 article from Ski Magazine reads “How big would Colorado be if you steamrolled all of the mountains?”Read the rest on sciencefriday.com.Transcripts for each segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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