Euro zone emerges from recession (1:42)

Aug.14 - Strong growth in Germany and France has helped the euro zone emerge from a record 18 months of recession to date in the second quarter, confirming expectations a fragile recovery was under way. Ciara Sutton reports.

Human cells power mouse heart (0:54)

Aug. 14 - For the first time, researchers have used human stem cells to power a mouse heart. Scientists from the University of Pittsburgh School of Medicine stripped the mouse heart of its own cells and replaced them with stem cells derived human skin tissue. The findings were reported on Wednesday in the Journal ''Nature Communications''. Ben Gruber has more.