Environmental disaster is the gravest threat to China's continued development. That's according to me but it is not some wacko view.

Moreover the practical recommendations deduced from ecological principles threaten the vested interests of commerce it is hardly surprising that the financial and political power created by these investments should be used sometimes to suppress environmental impact studies.

Earth Day 1970 was irrefutable evidence that the American people understood the environmental threat and wanted action to resolve it.

Together we can and must fight for justice for our children and protect them from draconian tax cuts and budget choices that threaten their survival education and preparation for the future. If they are not ready for tomorrow neither is America.

To be clear climate change is a true 800 pound gorilla in the room. The effects of global warming threaten global environmental upheaval over the coming century. But for South Florida and the Everglades it could be our death knell if urgent action is not taken.

I have had death threats from people with fixations.

The police came to me to say I had death threats and that I had to be careful!

I think when you're 10 years old it's too much to see something with the threat of death in every episode. Kids are better left naive about certain things.

So we mustn't lower our guard in any sense because of what has happened in terms of the death of Osama Bin Laden and we are certainly not doing that. The terror threat level here in the U.K. remains at severe and we're very conscious of the need to continue that.

I was extended secret service protection during my presidential run in 1984 when I received the most death threats ever made toward a candidate.

He who does not fear death cares naught for threats.

A man who cannot be enticed by money or intimidated by the threat of jail or death has two of the strongest weapons that anyone has to offer.

If what you do is being threatened as a profession that could be scary. But that's the same reason why I walked out on stage many times after receiving death threats. I couldn't live without doing what I wanted to do. So at the same time I have to be willing to die for it.

All violence consists in some people forcing others under threat of suffering or death to do what they do not want to do.

Even very young children need to be informed about dying. Explain the concept of death very carefully to your child. This will make threatening him with it much more effective.

Before I begin talking about the threats we face the vulnerabilities that we have and frankly the courage of the men and women in uniform that stand in harm's way on behalf of a very grateful Nation let me first honor the sacrifices of September 11.

Just two weeks ago millions of Iraqis defied the threats of terrorists and went to the polls to determine their own future. I congratulate the Iraqi people for the courage they've shown in making these elections so successful.

We know the threats - from global terrorist networks to the spread of deadly weapons. Yet we also know that embedded in this time of danger is the promise of a new day if we have the courage and commitment to work together.

That said the question remains: how to strike the balance between free speech and mutual respect in this mixed-up world both blessed and cursed with instant communication? We should not fight fire with fire threats with threats.

I think we have to face the reality that in a society where there is a legitimate threat of terrorism not being able to see one's face not being able to have some sense of communication in that way is for many societies a challenge.

People can undergo a sudden change of thinking and loyalties under threat of death or intense social pressure and isolation from friends and family.

We have to face the reality of climate change. It is arguably the biggest threat we are facing today.

Climate change was a point of division between Obama and Republican rival Mitt Romney. The president declared climate change a global threat acknowledged that the actions of humanity were deepening the crisis and pledged to do something about it if elected.

There is a limit to the application of democratic methods. You can inquire of all the passengers as to what type of car they like to ride in but it is impossible to question them as to whether to apply the brakes when the train is at full speed and accident threatens.