Awareness, understanding and recognition of this major problem will help us all contemplate behaviour and environmental change with unusually welcome green outcomes.

BBC: Laziness will send us to an early grave

And to all the members of the administration, and members of Congress, and all the state and local leaders who are with us today, welcome.

WHITEHOUSE: Hanukkah at the White House

And this holiday season, all of us can finally say: welcome home.

WHITEHOUSE: Weekly Address: Honoring Those Who Served in Iraq