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Adele's career so far has been a story in numbers — and not just the ones in her album titles. Her latest LP, 25, has sold more copies than any other album in its first week of release --- more than 2.4 million so far — and the week is only half-over. Its first single, "Hello," has been the No. 1 song on the Billboard Hot 100 chart since it came out four weeks ago.

"The reality is this outbreak's not over," says Dr. William Fischer, speaking about Ebola. "It's just changed."

Fischer, a professor at the University of North Carolina who's been studying Ebola survivors, was speaking about the new cases in Liberia. On Monday, a 15-year-old died of the disease. The teenager's father and brother have also tested positive for Ebola. Health authorities have not yet determined how the family was infected.

An explosion ripped through a bus carrying presidential security in central Tunis on Tuesday, prompting the Tunisian president to issue a state of emergency for the North African country.

NPR's Leila Fadel reports that a spokesman for Tunisia's Interior Ministry said at least 11 people were killed in the attack and 17 others were wounded. The state of emergency will last for 30 days and an overnight curfew is also in place until tomorrow morning local time.

A Russian warplane shot down over the Turkish border on Tuesday crashed in an area of Syria that advocates want to protect with a no-fly zone, or even a "safe zone" — fenced off from attacks by the Syrian regime or extremist groups like the Islamic State.

Democratic presidential hopeful Hillary Clinton, Republican candidates Marco Rubio and Lindsey Graham, and other voices including Rep. Adam Schiff, D-Calif., all support a no-fly zone or safe zone in Syria.

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