The silver-backed chevrotain — a mysterious animal that's the size of a rabbit but looks like a silver-splashed deer — has been photographed in the wild for the first time. The chevrotain is the world's smallest hoofed mammal, or ungulate.

Scientists say they have rediscovered a type of chevrotain that had been "lost to science" for nearly 30 years.

Scorched by days of unrelenting wildfires, parts of southeast Australia are facing "catastrophic fire danger." On Monday, officials declared a state of emergency for all of New South Wales, the country's most populous state.

SpaceX successfully launched 60 communications satellites on Monday using a single rocket.

It's the second time in less than a year that Elon Musk's company has made such a launch, marking a dramatic increase in the number of satellites in orbit.

Updated at 11:15 a.m. ET

Hong Kong police shot an apparently unarmed protester on Monday, fueling outrage among pro-democracy activists on a day of violent clashes. In a separate incident, a man was set on fire during an argument about the demonstrations that have roiled the city.

House Speaker Nancy Pelosi and her lieutenants are turning a new page in their impeachment inquiry this week based on a principle familiar to classics scholars: repetitio mater studiorum.

"Repetition is the mother of all learning."

A onetime member of the Trump administration has some mildly critical words for her old boss but disagrees with Congress' efforts to impeach him.

Former Ambassador to the U.N. Nikki Haley said in an interview with NPR on Friday that "it is not a good practice for us ever to ask a foreign country to investigate an American" — referring to President Trump's efforts to get Ukraine to investigate former Vice President Joe Biden, his potential 2020 opponent.

But, she added, "I don't see it as impeachable."

Iraqi security forces launched an aggressive crackdown on anti-government demonstrators on Saturday, killing at least six people and injuring more than 100 others in central Baghdad.

Government authorities used live ammunition, tear gas and stun grenades to disperse protesters and to retake three bridges that cross the Tigris River to the heavily fortified Green Zone, where the Iraqi parliament is headquartered. The bridges were being occupied by the demonstrators demanding sweeping political reforms and an end of corruption.