Researchers just exposed what's in tattoo ink — and it’s a ‘significant problem’
"Do you have a tattoo?" I ask John Swierk, assistant professor of Chemistry at Binghamton University, New York.
"When I was growing up, most of my friends didn't have tattoos, they weren't anywhere near as popular as they are today. So it's not something I thought a lot about," he tells me.
The number of satellites in orbit is increasing and soon we will have difficulties observing the sky. Cleaning up the space debris would be like 'collecting bullets'.
In a first, researchers discovered a rare mineral that comes directly from Earth's lower mantle