Intolerance was perhaps the most difficult challenge to address.

New fungal infections are even scarier and might be harder to treat.

Yet, by switching off the lights, all we are doing is making it harder to see.

Another hypothesis is that it is actually intelligence that causes social relationships to become more complex, because intelligent individuals are more difficult to learn to know.

The main thing that anyone accomplished by turning off the lights at nighttime for an hour was to make it harder to see.

For some people we made it harder by hiding the instructions.

European officials will argue that their problem is more difficult.

Things became more difficult with the advent of the Great Depression.

That Khamenei is himself more of an ideologue makes that task doubly difficult for him.

12.53 Even more difficult is the fate of the girl child who has been abused by her immediate family.

But governing the enlarged union has become more difficult and less efficient.

But success in Cairo might prove even more challenging.

However, the latter task would appear to be far more daunting than the former.

And here, the endless delays are making the challenges more daunting and the outcome more uncertain.

The value for money question is even more difficult to assess.

A more difficult issue for Hu could be intellectual property rights.

So exporting will become an even tougher business.

That, of course, is much more interesting and harder to do.

China s challenge, however, may be more difficult.

As it turns out, parenting is hard, and the stresses of immigrant life only make it harder.

The technology there was much more difficult than what I'm dealing with here.

I know it s a hard life and it s not easy but what makes it so much harder and at times unbearable is how people treat me and my children.

And the second thing is confidence, that we can see how game playing and reward structures make people braver, make them more willing to take risks, more willing to take on difficulty, harder to discourage.

As a result, bank credit will be harder to obtain.

Calculating how much it would cost to stop landowners felling their trees is harder.

For middle income countries, it is a tougher call.

That's because it is hard for most people to recognize seriousness, which is rare, but more comfortable to endorse solemnity, which is commonplace.

Evaluating charities can be more difficult than making investment decisions.

And reality is even harder to shape than a myth.

Earth Hour teaches us that tackling global warming is easy. Yet, by switching off the lights, all we are doing is making it harder to see.

The complex things get more fragile, more vulnerable the Goldilocks conditions get more stringent, and it's more difficult to create complexity.

This will prove more difficult than it first sounds.

First, they are not easy to detect with confidence, and are even more difficult to prove.

But the larger the banking sector, the more difficult this might become.

In 2013, Sam s day would have been far more difficult, stressful, and expensive.

A return to normal risk assessment is also more difficult in Europe.

For smaller economies, however, internationalization will be far more difficult.

Making the right call is more difficult in the real world than in a philosophy classroom.

Accordingly, the protection obligations of the United Nations were becoming increasingly challenging and complex.

In aviation, a crosswind is the component of wind that is blowing across the runway, making landings and take offs more difficult than if the wind were blowing straight down the runway.

Additionally, strategies to circumvent the Basel rules made banks more complex and difficult to manage and supervise.

According to Van Damme, ballet is an art, but it's also one of the most difficult sports.

And these couple clips take you inside of two of the most difficult conflicts that we are faced with today.

But the transition from follower to leader at the frontier of the innovation economy is more challenging and elusive.

That means, above all, avoiding trade that makes it more difficult to pursue those aims.