challenge

The other challenge is that symptoms from the parasite can take weeks to appear, making it hard for investigators to accurately trace back everything someone has eaten in order to pinpoint a common link.

From BBC ● Jul. 24, 2026

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

There’s so much to chew on in David Alvarado’s portrait of life, art and activism that “American Pachuco” plays like a joyful challenge to those searching for their own voice or meaning.

From Los Angeles Times ● 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

Teller stayed at Los Alamos and aimed his relentless brain at the challenge of the Super.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin

Shifting all of them to electric power would be the same as taking around 30,000 cars off the road annually, according to the city council, but costs and infrastructure challenges lie ahead.

From Barron's ● Jul. 25, 2026

The measures were planned after a months-long investigation and are considered more resistant to legal challenges than earlier moves.

From Barron's ● Jul. 24, 2026

The pair endure many challenges in business but ultimately achieve considerable success.

From The Wall Street Journal ● Jul. 24, 2026

Nigeria's president has approved the country's largest military expansion in recent times - an attempt to tackle the slew of security challenges plaguing the nation.

From BBC ● Jul. 24, 2026

“I will set you a series of challenges, and you will tell me how you might overcome them with the resources I give you.”

From "The Cruel Prince" by Holly Black

World trade flows rose for a second month in May, a sign of economic resilience that may be challenged by a fresh wave of U.S. tariff hikes.

From The Wall Street Journal ● Jul. 24, 2026

"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

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

Keegan is one of the most transformational figures in Newcastle's history - the mastermind behind 'The Entertainers', who challenged for the Premier League title in 1996.

From BBC ● Jul. 20, 2026

Like many other amateur code breakers, he challenged her to break some messages in a new system that he himself had devised.

From "The Woman All Spies Fear" by Amy Butler Greenfield

“We have been taking actions to help mitigate this volatility in a challenging competitive environment,” Chief Executive Mike Smith said.

From The Wall Street Journal ● Jul. 24, 2026

"This year has been pretty windy across Wales, so some of the longer trips to record cropmarks have made for challenging flying," Driver said.

From BBC ● 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

Shouldn’t the focus be on improving ourselves, rather than challenging a biased system?

From "The New Jim Crow" by Michelle Alexander