"People tend to immediately think of neurons when they think about how the brain works. But we're finding that astrocytes, what we used to think of as just secondary support cells, are also participating in how our brains regulate how much we eat."
In response to threats by US President Donald Trump to somehow acquire Greenland (Kalaallit Nunaat), US scientists have drafted what they call a statement in solidarity with the island, open to any US-based researchers who have conducted research there. "A lot of people in the US - not just scientists - are very upset about the rhetoric directed towards Greenland. But scientists who work there feel it very personally," says paleoclimatologist Yarrow Axford, who is one of the creators of the initiative.
Just consider a typical day in the life of a modern human: you glance at your phone while waiting for coffee to brew, skim headlines while half-listening to a podcast, mentally rehearse a client pitch while walking your child to school, reply "noted" on Slack during a meeting while updating a slide deck, check your bank balance while standing in line,
You settle in for a quick scroll through your feed, maybe just to unwind for a minute or two. But somewhere between a cooking hack and a clip you've already forgotten, forty minutes vanished. It's all a blur. Welcome to the era of infinite content and finite attention, where our brains are working overtime just to keep up with the deluge.
The human brain is engineered to ignore most of what it sees and hears, according to the neuroscientists I interviewed for the audio original Viral Voices. If that's the case, how are you supposed to make a memorable impression? The empowering news is that if you understand how the brain works, what it discards, and what it pays attention to, you'll be far more persuasive than you've ever imagined. Persuasive people have influence in their personal and professional lives.
Neuroscientists have a name for the brain network that fires up when you're not focused on an external task: the default mode network, or DMN. It's the constellation of regions - the medial prefrontal cortex, posterior cingulate cortex, and angular gyrus among them - that hums to life when you daydream, reflect on yourself, or think about other people's mental states.
I am a worrier, and have been for most of my life. At some point, someone dear and smart teased me that I worry about the wrong things. The things that hit me, she noted, were never the things I worried about. For a while that left me feeling like an incompetent worrier-until my research caught up. I realized that the things I worry about often don't end up hurting me precisely because worrying helps me diffuse them ahead of time.