In a region with a growing population, if you're doing nothing, you're losing ground.

Some environmentalists have had the feeling that Indians are not good stewards. I've always been critical of that.

A limit on the automobile population of the United States would be the best of news for our cities. The end of automania would save open spaces, encourage wiser land use, and contribute greatly to ending suburban sprawl.

The atomic weapons race and the secrecy surrounding it crushed American democracy. It induced us to conduct government according to lies. It distorted justice. It undermined American morality.

There are environmental threats to health; there are internal threats to health - genetic conditions, viral threats, diseases like cancer and Parkinson's. And then there are societal and global ones, like poverty and lack of nutrition. And unknown viral threats - everything from a new kind of influenza to hemorrhagic fever.

Climate change is a very real threat right now to our economy, the future of our children, to our way of life.

A mountain is composed of tiny grains of earth. The ocean is made up of tiny drops of water. Even so, life is but an endless series of little details, actions, speeches, and thoughts. And the consequences whether good or bad of even the least of them are far-reaching.

As we consume more than ever, climate change is accelerating as well. In fact, we know that 2014 was the hottest year in human history. These pressures combine to create real threats to security and stability around the world.