From left is, 3-D printing liquid, 3-D-printed piece from liquid resin and liquid resin piece treated with ultraviolet light. Researchers at the University of California, Riverside have found parts produced by some commercial 3D printers are toxic to certain fish embryos. Their results have raised questions about how to dispose of parts and waste materials from 3D printers.

Eotiaris guadalupensis fossil was discovered by USC's Jeffrey Thompson in the Smithsonian collections. Researchers have uncovered a fossil sea urchin that pushes back a fork in its family tree by 10 million years, according to a new study.

More than 40 percent of older patients with acute myeloid leukemia (AML) can remain in long-term cancer remission through a modified, less aggressive approach to donor stem cell transplantation, according to the results of a phase 2 study led by oncologists at The Ohio State University Comprehensive Cancer Center -- Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC -- James).

Scientists have shown for the first time that tumour DNA shed into the bloodstream can be used to track cancers in real time as they evolve and respond to treatment, according to a new Cancer Research UK study published in the journal Nature Communications today (Wednesday).

The size of returning Atlantic salmon is largely dependent on the number of years that the salmon remains at sea before returning to spawn in the river. The genetic basis of this trait has not been previously known, making the management of the impact of fishing difficult. In many Atlantic salmon populations, the sea-age at maturity, i.e. the number of years at sea, has been declining.