challenge

Understanding what causes these chemicals to form, and what might prevent their formation, has been a longstanding challenge.

From Science Daily ● Nov. 15, 2026

The challenge, of course, is finding 17-year-olds strong and capable enough to make the gambit worth it.

From The Wall Street Journal ● Nov. 14, 2026

Fiji - now coached by Jake White, who led South Africa to World Cup success in 2007 - played with immense physicality and purpose in the first half but their challenge faded after the restart.

From BBC ● Nov. 14, 2026

Garrett said he does not back down from a challenge by teammates.

From Los Angeles Times ● Nov. 14, 2026

The challenge of running a nuclear reactor lies in keeping the number of bouncing neutrons inside it steady.

From "Meltdown" by Deirdre Langeland

But the author’s travel challenges are far from over, because he’ll be in transit almost constantly between now and Thanksgiving.

From Los Angeles Times ● Nov. 14, 2026

For Ruby Cumming, the challenges of recovering from ACL surgery were deeply personal.

From Science Daily ● Nov. 14, 2026

Sen. Ron Wyden of Oregon and Rep. Richard Neal of Massachusetts have both identified trade as a priority, and they are both aware of the challenges facing our largest entitlement programs.

From MarketWatch ● Nov. 14, 2026

With voter registration far from being completed, the schedule for a December vote also presented significant logistical challenges.

From Barron's ● Nov. 14, 2026

“Helena, I know I’ve told you this twenty thousand times, but you need challenges bigger than Baked Alaskas. Julia's flying the nest this year. Why don’t you think about going back to work?”

From "Black Swan Green" by David Mitchell

Instead, they organized, challenged their own party, and made themselves harder to dismiss.

From Slate ● Nov. 13, 2026

Doncic grabbed at his ankle immediately after he landed and Lakers staff members tended to him while Kuzma’s closeout was challenged for a potential flagrant foul.

From Los Angeles Times ● Nov. 12, 2026

However, Gordon Brothers has painted a different picture, saying the chain remains "challenged and vulnerable to any potential downturn in future trading".

From BBC ● Nov. 11, 2026

Bangladesh's government challenged her on Tuesday to seek extradition from India if she was genuinely determined to return.

From Barron's ● Nov. 11, 2026

In fact, in some jurisdictions, individuals may “choose” to go to jail as a way to reduce their debt burdens, a practice that has been challenged as unconstitutional.

From "The New Jim Crow" by Michelle Alexander

This capability was essential to finding ED138 in such a challenging part of the sky.

From Science Daily ● Nov. 14, 2026

Despite the challenging market environment, Richemont is benefiting from the resilience of jewelry.

From The Wall Street Journal ● Nov. 13, 2026

Matt Saunders, field chief technology officer at tech consultancy Adaptavist, said it would be challenging to mitigate against a similar problem.

From BBC ● Nov. 13, 2026

It’s a bit more challenging, but I want to do that.

From Los Angeles Times ● Nov. 13, 2026

The knight planted himself in the middle of the road, challenging every one of those "knights" to fight, one by one or in a group.

From "Adventures of Don Quixote" by Argentina Palacios