challenge

During the logo-design challenge, when the instructions changed every three minutes, Ryan thought to herself: This is harder than I thought.

From The Wall Street Journal ● Jul. 24, 2026

His lawyer said he would challenge "the lawfulness and fairness of the decision through all available legal mechanisms".

From BBC ● Jul. 24, 2026

"It's a very hard research challenge," said Dan Lahav, head of Irregular, a cybersecurity firm dedicated to cutting-edge AI.

From Barron's ● Jul. 24, 2026

The real challenge is finding deposits where they occur in concentrations high enough to make extraction economically practical.

From Science Daily ● Jul. 24, 2026

A bold challenge was posed to the public, “COME AND INVESTIGATE.”

From "American Spirits" by Barb Rosenstock

"Recently, Japan's native giant salamanders have faced challenges such as hybridization with foreign species and habitat destruction," says Noda.

From Science Daily ● Jul. 24, 2026

“For the ‘Burnham bounce’ to be sustainable and boost consumer confidence, it will require consistent delivery by the refreshed U.K. government against deep cost-of-living challenges and persistent low economic growth,” he said.

From The Wall Street Journal ● Jul. 23, 2026

On Friday in Manchester Burnham will chair a meeting of the National Economic Council, a cabinet committee first launched in 2008 to respond to economic challenges around the UK.

From BBC ● Jul. 23, 2026

Espinosa, a former foreign minister of Ecuador, has called the United Nations the only universal platform for handling humanity's common challenges, but also wants deeper reform of the world body.

From Barron's ● Jul. 23, 2026

The double helix has solved all three of the major challenges of genetic physiology using ingenious variations on the same theme.

From "The Gene" by Siddhartha Mukherjee

"Our relationship has been challenged over the last few years," Ontario Premier Doug Ford said of US-Canada ties, but added: "Let's keep working together."

From Barron's ● Jul. 24, 2026

Insurers have challenged about 40% of claims by providers as ineligible for arbitration under the no surprise law, usually because they involve elective procedures.

From The Wall Street Journal ● Jul. 23, 2026

He also said the authenticity of the bite marks on the photo — which form a circular shape with an absence of bruising — could be challenged in court by an expert in tooth reconstruction.

From Los Angeles Times ● Jul. 23, 2026

Over the years, Breivik has challenged the terms of his sentence.

From BBC ● Jul. 20, 2026

At one o’clock in the morning, a square-jawed private arrived at the barracks, roused Captain Babushkinov, and informed him that the furious general had challenged him to a duel.

From "The Long-Lost Home" by Maryrose Wood

She told BBC Radio 4's Today programme that the target had become more challenging to meet, pointing to increased construction costs as one of the reasons for that.

From BBC ● Jul. 24, 2026

“In businesses closer to the consumer, the pricing environment was more challenging, and there had been little adjustment of prices so far,” it said.

From The Wall Street Journal ● Jul. 24, 2026

Charter Communications’ latest earnings results highlight the increasingly competitive broadband market, which has proved challenging for established cable providers.

From MarketWatch ● Jul. 24, 2026

Flores, a lawyer challenging Gonzalez, is worth between $2.6 million and $11.4 million, owing to his ownership of a healthcare company and his wife’s trust.

From Salon ● Jul. 24, 2026

She heard the low, soft, rhythmic grunts of the females and cooing of the infants, the rumble of the males, with now and then a challenging bark.

From "A Girl Named Disaster" by Nancy Farmer