Putting her mechanical engineering training to work, Tahira Reid and other researchers at Purdue University are studying how heat treatment interacts with different types of hair and how to prevent damage.
Viral hepatitis infections kill nearly 1 million people a year.
The National Senior Games take place every two years.
A new report says the number of people over the age of 60 is expected to double by the year 2050.
The Dalai Lama entered the Mayo Clinic in the American state of Minnesota earlier this week.
China is among those governments that have banned single women from freezing their eggs for future use.
In the United States, many children are returning to school after a nearly three-month summer break from classes.
Sierra Leone has quarantined 50 people in the northern area of Kambia.
The World Health Organization reports that hundreds of millions of people have a mental health disorder, but receive little or no treatment.
There is a new celebrity in the United States.