Talks kick off on global plastic trash treaty

Despite decades of effort, plastic pollution is only getting worse—a gloomy fact that representatives of almost 200 nations meeting in Uruguay Monday are determined to change.

Rewinding development: A step forward for stem cell research

Scientists at the Danish Stem Cell Center, DanStem, at the University of Copenhagen have discovered that they can make embryonic stem cells regress to a stage of development where they are able to make placenta cells as well ...