The ancestors of Alaska Native people began using local copper sources to craft intricate tools roughly 1,000 years ago. Over one-third of all copper objects archaeologists have found in this region were excavated at a single spot, named the Gulkana Site.
This is the site I’ve studied for the past four years as a Ph.D. student at Purdue...
The human body today has many replaceable parts, ranging from artificial hearts[1] to myoelectric feet[2]. What makes this possible is not just complicated technology and delicate surgical procedures. It’s also an idea — that humans can and should alter patients’ bodies in supremely difficult and invasive ways.
Where did that idea come...
Imagine keeping a laser beam trained on a dime that’s 200 miles away. Now imagine doing that continuously for 24 hours, while riding a merry-go-round. Seem difficult? Well, that’s basically what the Hubble Space Telescope does.
After months of technical issues, NASA announced June 4 that Hubble would shift into one-gyroscope mode[1]. This...
Microbiome research to date has been much like the parable of the blind men and the elephant[1]. How much can be said about an elephant by examining just its tail? Researchers have studied what is most readily available – stool rescued from a flush down the toilet – but have been missing the microbial masterminds upstream in the small...