Title: Solar energy.
Question: What is one way that characterizes solar technologies as passive or active?

Title: Eritrea.
Question: How old were the obsidian tools that were discovered by the Eritrean Research Project Team?

Title: Muammar Gaddafi.
Question: How did Gaddafi change the legal system?

Title: Universal Studios.
Question:
Who became the chairperson in late 2009?