Many questions remain following the Jan. 3 death of Qassem Soleimani and Iran’s potential retaliation. Chief among them: Was the strike legal? “Unless there is much more to the story than meets the eye, the answer seems to be no,” said Leila Sadat, director of the Whitney R. Harris World Law Institute and an expert on international criminal law.

Some economic observers continue to warn about signs of a potential U.S. recession. Glenn MacDonald, the John M. Olin Distinguished Professor of Economics and Strategy at Olin Business School at Washington University in St. Louis, says many signs aren’t particularly reliable — but keep an eye on housing starts.

Merriam-Webster has chosen “they” as the 2019 Word of the Year, a move applauded by an expert on later-in-life gender transitions at Washington University in St. Louis.

In a Dec. 10 briefing on Capitol Hill, chemist Sophia Hayes of Washington University in St. Louis and an expert on helium testified that steep price increases and “supply shocks” threaten basic research in academic settings. Shortages will also lead to broader health and industry applications, she said.

‘Tis the season to shop, and who better to offer advice than a scientist who has studied gift-giving? With the holiday shopping season in full swing, Olin Business School marketing expert Elanor Williams offers four suggestions to keep in mind when buying gifts.

In Bolivia, a tangled election mess seems to have reaffirmed the popularity of leader Evo Morales. A Washington University in St. Louis faculty member says the country has propped up a new leader in what amounts to a military coup.

Washington University in St. Louis climate change experts react to the Trump administration decision to withdraw from the Paris Agreement on climate change.

A Washington University in St. Louis expert on circadian rhythms says the country should be on standard time permanently. The science behind the choice is clear: standard time is better in terms of sleep, cardiac function, weight, cancer risk and alcohol and tobacco consumption.

Under principles of free speech, anyone — such as Chinese state television — is entitled to hold their view of anything, including the scope of freedom of speech, says Gregory Magarian, as Constitutional law expert at Washington University in St. Louis School of Law.

Whatever impeachment moves the Democratic-majority U.S. House of Representatives makes next, it’s ultimately up to the Republican-controlled and administration-friendly Senate to hold a trial on the matter — and Washington University in St. Louis political scientist Steve Smith anticipates the Senate could make a number of moves to avoid the issue.