Barbara Bush, 88, is in a hospital in Houston with a respiratory-related issue, according to her husband's office.
In 2005, Lynn Stewart was convicted of helping blind Egyptian cleric Sheik Omar Abdel Rahman communicate with followers while he was serving a life sentence for plotting to blow up New York City landmarks.
When physicist Flavio Noca first saw penguins zooming around underwater, he was blown away by their speed and maneuverability. Now, his team has built a robotic arm that perfectly mimics the flippers in action — and he says the device could someday propel underwater craft.
A local Christian aid group is trying to help villages adapt by planting drought-tolerant crops and setting up pumps for irrigation. But even with new methods and crops, farmers still need to know: When is it safe to plant?