Tom made a few serious mistakes.

Those are careful estimates by serious economists.

A second, perhaps more important, cause for optimism is the fact that Colombians are more aware than ever that their political institutions are morally bankrupt. In that recognition may lay the political support needed for serious reform to take place.

The tropical countries have several severe disadvantages.

I had some bad breaks.

Yet there is little ground for genuine optimism.

At the moment, it looks as if there is nothing to fear from China.

But the current situation calls for far more serious measures.

Japan also faces serious demographic challenges.

One of the most serious occurred in 2010.

The first time, the image escaped heavy damage because of the militants incompetence.

Loss of biological diversity is one of the most severe such threats.

But there are several serious conceptual flaws in this reasoning.

There is no doubt that he is guilty of serious war crimes.

And yet, there is no getting away from the strictly business explanation.

Walaupun sering menjadi berita utama, konflik kekerasan semakin berkurang.

In a space of 50 years, the nuclear industry has experienced three serious incidents.

Thus, the US urgently needs to begin making four serious changes.

So, if serious reforms are to be implemented, strong and persistent public pressure will be needed.

And humor is a good way, I think, to address serious issues.

But no serious disarmament negotiations have been pursued since.

Some of the rowdiest action of the night took place south of the park.

China s strategy has had more success without provoking serious risks against the weaker Philippines.

Nor can the risk of violent clashes between pro and anti Chávez forces be ruled out.

Security threats are among the most serious setbacks in transitions.

Clearly, there is a deficit of useful information and serious scientific research in this field.

TILBURG, THE NETHERLANDS The current economic crisis highlights the need for major changes at central banks.

This instability also makes it difficult to address other grave problems affecting the global financial system.

The danger of nuclear terrorism constitutes one of the gravest threats to our collective security.

He managed to stay at the helm for over forty years with no serious challengers.

There were serious splits, but no one could have known exactly what the end results would be.

During major international incidents or crises, America has seldom voted against an incumbent president.

But improving relations with its neighbors to the South will require making commitments at several levels.

These three qualities should be put to work if our planet is to be spared major water wars.

Indeed, high living standards and high social expectations make it political suicide for any party or leader to propose even the short term sacrifices serious reform will entail.

Yet I felt two strong obligations for the future.

Not surprisingly, Iraq s child workers suffer from a wide array of serious health problems.

There is also a real possibility of major upheavals in both Bahrain and Jordan.

The situation is not bad enough to incite demands for serious reform.

Others counter that there is little evidence that trade erodes national standards.

Should instability ignite into open warfare, Russia will find it impossible to avoid the consequences.

And at serious theaters, let them go on re enacting how Konstantin Gavrilovich shot himself .

But, by cushioning against sufficiently calamitous risks, the same advantages allow the US to procrastinate.

Or even any serious and incurable illness or disability?

A comprehensive effort to enhance the mobility of temporary workers from poor countries to rich countries. This is where the gains from liberalization would be the largest, because it is here that the barriers are the highest.