President Obama's climate policies will make next to no difference in global concentrations of greenhouse gases and temperature change

If the Administration is truly supportive of stimulating commercial space transportation, then it needs to consider where future demand might come from.

In this endeavor, failure is not an option.

I believe very strongly in a multilateral approach to human space exploration. I want to leave no doubt about that.

Thank you, Chairman Quayle. As this is our first hearing of the Congress, I want to take a moment to welcome you.

I look forward to working with you and to find common ground on many of the important issues.

We can't--and shouldn't--ignore the problems that have plagued both the Science & Technology Directorate and the Domestic Nuclear Detection Office in the past.

I couldn't be more pleased that our first hearing is on research and development at the Department of Homeland Security.

I also criticized the Directorate for not being sufficiently responsive to the needs of its customers, particularly first responders.

If you can't measure it, it is not real for economic or technical purposes.

We certainly extend our heartfelt condolences to all the Japanese who have been affected by this.