Doctors in Brazil discover and confirm that a woman has blood with male chromosomes, a rare case of human chimerism.

The findings might overturn a widely held belief that only females pose a disease risk to people, though more research is ...

After a quarter century where measles was considered eliminated in the U.S., 2025's continuous outbreaks have us back at ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

Red blood cells are essential for oxygen transport and immune function in the human body. When these cells become abnormally shaped, they can indicate serious health conditions, including diabetes, ...

“We concluded it is possible that exposure to these chemicals can lower sperm quality, disrupt hormones, and damage testicular tissue,” said Irfan, the study’s first author and a master of public ...