You are not a bastion of self-control. Everyone has a set amount of the stuff, and when life saps it, people can break. Now fMRIs from a University of Iowa study show exactly what it looks like when that happens.
In the same way humans might be tempted to binge on some junk food when they're under stress, grasshoppers head for the carbohydrate-rich foods when they get scared. The difference is the grasshoppers can leave behind some big-scale problems for the environment.
Taste is a highly subjective thing. But when science gets involved, things have to be measured, and the measurements must be exact.
Here are 11 ways that food is precisely measured. Bitterness can be determined based on a specific scale, and the amount of sucrose in a solution can be easily calculated. Some others are a little more esoteric: stretching cheese to measure its texture; determining the color of a beer based on how much light passes through it; testing the strength of coffee.
Despite plenty of advances in neuroscience, often what we know about the brain comes with gaps, and anything close to a full piece of knowledge always ends up lacking something — whether it's for the human brain or a mouse's.
The human body isn't a metal machine, but it's still plenty complicated, and regulating it like a machine is tough to pull off. That's why a new discovery by Klas Tybrandt, a doctoral student in Organic Electronics at Linköping University, Sweden, is exciting: he's developed the first integrated chemical chip, similar to silicon-based electronics, but for biologic material.
Sometimes, in the name of progress, doctors have nobody to test their medical theories on but themselves. And in these five cases--though several of them perished from the self-inflicted experiments--that testing was warranted, leading to key advances in the treatment of yellow fever, blunt force impact, ulcers, and more.
Last year, Nature and Science prepared to publish research describing how to mutate H5N1, a deadly bird flu, into more-contagious forms. The papers could help scientists create a treatment should a similar mutation occur in nature. But according to the U.S. government, the papers could also help terrorists create a weapon.
By Ryan BradleyPosted 02.29.2012 at 10:18 am 12 Comments
My first migraine arrived in a fuzzy cloud of reds and purples, a stab of pain that left me bent over in the back of an auto-rickshaw, squinting and nauseous, on my morning commute to Connaught Place, in New Delhi. Months later, when I left India, I thought that the headaches would disappear along with the chaos of the overcrowded capital. They didn't. And finally, after months spent stumbling into my room, drawing the curtains, and lying in the darkness for hours wishing for sleep, I went to an internist, who prescribed a brain scan.
Scientists needed $3 billion and 13 years to sequence the three billion base pairs encoded in a single human genome—the first time. By 2011, eight years after that first project was completed, the cost of sequencing a human genome had fallen to $5,000, in a process that took just a few weeks. And in January, Jonathan Rothberg, a chemical engineer and the founder of the biotech company Ion Torrent, unveiled an approach that is faster and cheaper still.
Space researchers uses deserts, valleys, and freezing lakes to test equipment and simulate procedures on space missions. Here's where they put future exploration to the test - without leaving our planet
By Katharine GammonPosted 02.24.2012 at 12:40 pm 5 Comments
To get into space, we have to practice at home. That's the idea behind NASA's Earth Analogs program, which tests people, ideas and technology at a variety of inhospitable places around the world. Finding places on Earth with physical similarities to space sites isn't easy - but the space agency has located desert, volcanic, arctic, lake and ocean locations for testing all manner of things.