THE PRESIDENT: Thank you. Mr. Secretary, thank you for the kind introduction. Members of my Cabinet, members of the administration, Admiral Mullen, members of the United States Congress, Senator Warne
Mother trees colonize their kin with bigger mycorrhizal networks. 母树通过更大的菌根网络来覆盖住自己孩子们所在的区域。 They send them more carbon below ground. 在地下，它们给孩子们会送去更多的碳。 They even reduce their own root competition to
I intend to establish working groups to prepare a series of White House conferences and meetings -- on the cities, on natural beauty, on the quality of education, and on other emerging challenges. And
