Nobel laureate calls handing of stem cell research data 'sloppy'
- Islamic State video purports to show beheading of U.S. journalist |
- Police move against protesters as calm dissolves in Ferguson, Missouri
- 'No' from one Iraq villager triggered Islamic State mass killings |
- Advancing Ukraine troops take fight to heart of pro-Moscow rebellion |
- Islamic State says beheads U.S. journalist, holds another