Singer Christina Aguilera delivered a 6-pound, 2-ounce baby boy last Saturday night. It’s the first child for her and husband Jordan Bratman,

a music executive.

Scientists at the University of Minnesota have constructed a functioning rat heart from scratch, using heart cells injected from baby rodents. This technique might lead to improved transplants in humans.

About 188,000 pounds of ground beef has been recalled by a meat-packer in Minnesota over fears that it may have been contaminated with E. coli.

Gunmen opened fire on a crowd of protestors in the Yemenese port city of Aden, killing at least two people and injuring 15 others. The rally called for reconciliation between the northern and southern portions of Yemen.