Why Russia's threat of invasion is personal for Ukrainian Americans

How climate change threatens the Winter Olympics’ future – even snowmaking has limits for saving it

Steven R. Fassnacht, Colorado State University; Sunshine Swetnam, Colorado State University

Innovation made the 2022 Winter Games possible in Beijing, but snowmaking has limits in a warming climate.

A mild-mannered biker triggered a huge debate over humans’ role in climate change – in the early 20th century

Sylvia G. Dee, Rice University

His theory, based on years of detailed climate and weather data, became known as the Callendar Effect. Today we call it global warming.

Why do humans have bones instead of cartilage like sharks?

Michael Heithaus, Florida International University

Hard and strong, or bendy and flexible? A cartilaginous skeleton provides advantages in the ocean, but wouldn’t stand up to life on land.

Must the president be a moral leader?

Michael Blake, University of Washington

Presidents Day celebrates the American president – not only as a political leader, but as a moral leader. But can a president be a person of strong moral character, as well as a strong leader?

How scammers like Anna Delvey and the Tinder Swindler exploit a core feature of human nature

Vanessa Bohns, Cornell University

Despite the belief that people are deeply skeptical of strangers, study after study shows that humans are primed to trust one another.

Dunkology 101: How the NBA could take a more scientific approach to scoring the slam dunk

Justin Barber, University of Kentucky

A new database could pave the way for a more fair and consistent way to score slam dunks, a self-described ‘dunk scientist’ says.

75 years of instant photos, thanks to inventor Edwin Land’s Polaroid camera

Ann Elsner, Indiana University

Whether at a family gathering or in a research lab, getting access to images immediately was a game-changer. And Land’s innovations went far beyond the instant photo.

Did Abraham Lincoln’s bromance alter the course of American history?

Charles B. Strozier, City University of New York

Would Abraham Lincoln ever have become president if he didn’t stumble into a dry goods store in Springfield, Illinois, and strike up a friendship with its owner, Joshua Speed?

A brief history of presidential lethargy

Stacy A. Cordery, Iowa State University

Calvin Coolidge, during one stretch of his presidency, was getting 15 hours of shut-eye each day, while William Howard Taft was known for nodding off during public events.

Olympic skiers and snowboarders are competing on 100% fake snow – the science of how it’s made and how it affects performance

5 things to know about why Russia might invade Ukraine – and why the US is involved

How Cup Noodles became one of the biggest transpacific business success stories of all time