According to the big bang theory, how old is the universe?

President of the united states has scheduled a cabinet meeting today to discuss energy policy with specific focus on pollution and global warming. given what you know of the executive branch, which group of attendees would the president most likely expect to provide up-to-date information and expert insight during this meeting?

How long have counties been a part of the government structure of the united states?

The people are the source for any and all governmental power in the united states