Cats may purr because they're happy, but also for a slew of other reasons, including getting their owner's attention and stress.
Coughing is helpful during sickness to protect the lungs from infection. But lasting inflammation may irritate the nerve reflexes that cause coughing.
Amazon's MacBook Air deal is back, and well worth a look for students.
The known population of the Yangtze giant softshell turtle is now just two males. Experts said that if the female had survived, she could have "laid a hundred eggs or more a year."