1. LOTS ON LINE AT GOP DEBATE
With Super Tuesday's mega-round of voting looming, the presidential campaign is shifting to a broader new phase, making a strong debate performance even more important.
2. SURGEONS PERFORM FIRST UTERUS TRANSPLANT IN U.S.
The operation at the Cleveland Clinic on a 26-year-old woman, using a uterus from a deceased donor, opens a new frontier that aims to give women who lack wombs a chance at pregnancy.
3. APPLE URGES JUDGE TO REVERSE ORDER
In a court filing, the tech giant argues that requiring it to help the FBI hack into a locked iPhone would violate the company's constitutional rights.
4. DEADLY SHOOTING RAMPAGE IN KANSAS
A suspect is killed by authorities at his workplace after a series of shootings in the small town of Hesston in south-central Kansas that left several people dead.
5. HOW U.S., RUSSIA VIEW SYRIAN CEASE-FIRE
Amid skepticism that the agreement will hold, both world powers nonetheless describe it as the best path for ending five years of violence.
6. REFORM CANDIDATES VYING IN ELECTIONS IN IRAN
A stronger reformist presence in parliament would give moderate President Rouhani support as he tries to move toward warmer ties with the U.S. and the West.
7. WHY MEDICAL EXPERTS ARE CRITICIZING RESPONSE TO ZIKA
Some say Brazil and international health officials have prematurely declared a link between the virus and what appears to be a surge in birth defects.
8. SCIENTISTS QUANTIFY NATURAL GAS LEAK
They say the leak that forced thousands of people from their Los Angeles homes was the largest reported release of climate-changing methane in U.S. history.
9. WHAT'S EMBARRASSING SEAWORLD
The company is acknowledging that it used a worker to infiltrate an animal rights group opposed to its practices.
10. ROSA PARKS' ARCHIVE NOW AVAILABLE ONLINE
The Library of Congress announces that the civil rights' pioneer's letters, writings, personal notes and photographs have been fully digitized.