The probe focuses partly on whether he abused his presidential powers and sought help from Ukraine to undermine rival Joe Biden and help his own reelection effort.
2. HOW WHITE HOUSE VIEWS IMPEACHMENT PROCEEDINGS
The announcement has largely been welcomed by Trump's advisers, who believe it could backfire against Democrats. 3. 'THE CHANGES ARE ACCELERATING'
Scientists warn that if global warming does not slow down, there will be much fewer fish, weakening ocean currents, even less snow and ice, stronger and wetter hurricanes, and nastier El Niños.
4. SYRIANS LAMENT 'FORGOTTEN' WAR
Many Syrians fear their country's unresolved conflict, now in its ninth year, has become a footnote in a long list of world crises. 5. PLÁCIDO DOMINGO WITHDRAWS FROM MET
The 78-year-old opera star backs out of scheduled performances at the Metropolitan Opera following allegations of sexual harassment made by multiple women in two AP stories.
6. RIPPLE EFFECT FELT IN GM STRIKE
With many replacement part warehouses shut down, dealers are beginning to run short of components to repair cars, trucks and SUVs. 7. 'I DON'T KNOW WHERE I'M GOING TO END UP'
Migrants aboard the Ocean Viking rescue ship docked in Italy face an uncertain future at the end of an agonizing journey from North Africa.
8. WHERE RODENTS HAVE RUN AMOK
California officials are preparing to ramp up eradication efforts against an invasive swamp rodent to prevent environmental destruction. 9. 'ALEXA, HELP ME GET A JOB AT MCDONALD'S'
In a first, the restaurant chain is using Amazon Alexa and Google Assistant to let new workers apply by voice.
10. WHO'S BACK ON THE AIR
Former Minnesota Sen. Al Franken, who resigned in 2017 amid sexual misconduct accusations, is launching a new SiriusXM radio show.