(CNN) — Here is some background information about stem cells. Scientists believe that stem cell research can be used to treat medical conditions including Parkinson’s disease, spinal cord injury, ...

Science isn’t just something we read about in textbooks - it’s happening in real time all around us. Here are 25 scientific facts that you encounter every day without even realizing it.

Embryonic stem cells are harvested from four to six-day-old embryos. These embryos are either leftover embryos in fertility clinics or embryos created specifically for harvesting stem cells by ...