A team of researchers led by UC Santa Cruz recently released a sophisticated new map that reveals, for the first time, the unique “geologic fingerprints” for most of the African continent. The map ...

The eastern North American population of monarch butterflies are famous for their annual, multi-generational, round-trip migration from the oyamel fir forests of Central Mexico through the United ...

SALT LAKE CITY, May 15, 2015 -- Salmon carry a strontium chemical signature in their "ear bones" that lets scientists identify specific streams where the fish hatched and lived before they were caught ...

The ratios of strontium isotopes in fossil shark teeth can be used to better understand how coastal environments evolved in ancient times, according to our newly published work. Our study was one of ...

A biology student traveled 20,000 kilometers collecting milkweed, creating isotope analysis of monarch butterflies' annual migration journey, hoping to identify factors behind this threatened insect's ...

Marine barite extracted from deep-sea sediment cores, seen here in a scanning electron microscope image, provides a record of variations in ocean chemistry over geologic time. (Image by Adina Paytan) ...

Tracing the regional origin of everything from milk to invasive bugs is now possible thanks to a new project. A strontium isotope map means biological material can be pinpointed to distinct ...

A drama has been unfolding in the corridor outside Matthew Wooller’s lab at the University of Alaska. That’s where he and his colleagues tape up large sheets of paper mapping levels of strontium, ...