If Anxiety Is In My Brain, Why Is My Heart Pounding? A Psychiatrist Explains The Neuroscience And Physiology Of Fear

Posted on Categories Discover Magazine

Heart in your throat. Butterflies in your stomach. Bad gut feeling. These are all phrases many people use to describe fear and anxiety. You have likely felt anxiety inside your chest or stomach, and your brain usually doesn’t hurt when you’re scared. Many cultures tie cowardice and bravery more to the heart or the guts than to the brain.But science has traditionally seen the brain as the birthplace and processing site of fear and anxiety. Then why and how do you feel these emotions in oth ...read more

Cities Are Depaving for a Cooler Future

Posted on Categories Discover Magazine

It all started because a man named Arif Khan wanted a garden. In 2007, he had recently moved into a house in Portland, Ore., whose backyard was covered in asphalt. Some friends helped him tear up the impervious surface, and soon after, they won a small grant to carry out a similar project in front of a local cafe. “It was a one-off,” said Ted Labbe, co-founder of Depave, an urban greening movement. “But it was so successful that the next year we got solicited to do three projects, and th ...read more

Farmers Are Breeding Heat-Resistant Cows

Posted on Categories Discover Magazine

At Vaqueria El Remanso, a small dairy farm west of San Juan, Puerto Rico, the cows are different — they have a freshly shaven, suave look. Their short hair is the result of a natural mutation known as “slick,” which Rafael López-López, who runs El Remanso, has been breeding into his cows for decades.“In hot, humid conditions, the slick cows have an advantage,” López-López said on a scorching spring morning, walking among his herd in the shade of the milking barn. The genetic mut ...read more

Why Do Dogs Suddenly Get the Zoomies?

Posted on Categories Discover Magazine

At times, it may seem like your dog is possessed, running to and fro, or round in quick, frenzied circles. This sudden burst of energy is actually common behavior, widely known as the zoomies, and is scientifically known as Frenetic Random Activity Periods (FRAPs).“It’s like a sudden outburst which looks like excitement where your dog runs really fast,” says Lili Chin, author of Doggie Language: A dog lover’s guide to understanding your best friend. “They might jump up and down and bar ...read more

Humanity’s Early Ancestors Narrowly Escaped Extinction in a Frozen World

Posted on Categories Discover Magazine

Humanity’s ancestors nearly went extinct between 930,000 years and 813,000 years ago, when their numbers dwindled to about 1,280 breeding individuals, according to a new paper.The study blames climatic conditions during the Mid-Pleistocene Transition, when encroaching glaciers and drought killed off many of the early humans’ food sources.Generations that lived through the stark 117,000-year period helped to rebuild hominid populations in Europe and Asia to a relatively stable level of about ...read more

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