Billions of these birds once flew over North America, but the last known passenger pigeon died in 1914. To try to figure out what happened, scientists analyzed DNA from the toes of birds in museums.
Researchers disabled a gene that they think helps determine which human embryos will develop normally. The technique they used is controversial because it could be used to change babies' DNA.
The "DNA Discussion Project" brings students, staff and faculty at West Chester University together to learn about their genetic heritage. For some people, the revelations are hard to digest.
In experimental embryos, scientists were able to repair the gene that causes a serious heart disorder. More research is needed to confirm the method would produce healthy babies, they say.
A baby who was conceived through an experimental procedure designed to prevent a deadly disease appears to be healthy. But some potentially defective DNA remains. Will it affect his health long term?
An international consortium of researchers has synthesized about a third of the genetic code of baker's yeast. It's an important milestone in science's quest to create complex "synthetic life."
Malaysian officials did an autopsy on the body of Kim Jong Nam, who died in Kuala Lumpur under mysterious circumstances, but haven't released the results. Pyongyang says it won't accept the findings.
Scientists are experimenting with species' environmental DNA to find out how far and how fast it travels in streams. The technology is starting to revolutionize how we protect native animals.