Here is a question about this article: Internet service providers in many countries are legally required (e.g., via Communications Assistance for Law Enforcement Act (CALEA) in the U.S.) to allow law enforcement agencies to monitor some or all of the information transmitted by the ISP. Furthermore, in some countries ISPs are subject to monitoring by intelligence agencies. In the U.S., a controversial National Security Agency program known as PRISM provides for broad monitoring of Internet users traffic and has raised concerns about potential violation of the privacy protections in the Fourth Amendment to the United States Constitution. Modern ISPs integrate a wide array of surveillance and packet sniffing equipment into their networks, which then feeds the data to law-enforcement/intelligence networks (such as DCSNet in the United States, or SORM in Russia) allowing monitoring of Internet traffic in real time.
What is the answer to this question: What is the controversial N.S.A. program used in the U.S.?
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So... PRISM


Here is a question about this article: Lighting or illumination is the deliberate use of light to achieve a practical or aesthetic effect. Lighting includes the use of both artificial light sources like lamps and light fixtures, as well as natural illumination by capturing daylight. Daylighting (using windows, skylights, or light shelves) is sometimes used as the main source of light during daytime in buildings. This can save energy in place of using artificial lighting, which represents a major component of energy consumption in buildings. Proper lighting can enhance task performance, improve the appearance of an area, or have positive psychological effects on occupants.
What is the answer to this question: What does using natural illumination instead of artificial lighting help with?
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So... energy consumption


Here is a question about this article: The "General Law of Linguistic Rights of the Indigenous Peoples" grants all indigenous languages spoken in Mexico, regardless of the number of speakers, the same validity as Spanish in all territories in which they are spoken, and indigenous peoples are entitled to request some public services and documents in their native languages. Along with Spanish, the law has granted them — more than 60 languages — the status of "national languages". The law includes all indigenous languages of the Americas regardless of origin; that is, it includes the indigenous languages of ethnic groups non-native to the territory. As such the National Commission for the Development of Indigenous Peoples recognizes the language of the Kickapoo, who immigrated from the United States, and recognizes the languages of the Guatemalan indigenous refugees. The Mexican government has promoted and established bilingual primary and secondary education in some indigenous rural communities. Nonetheless, of the indigenous peoples in Mexico, only about 67% of them (or 5.4% of the country's population) speak an indigenous language and about a sixth do not speak Spanish (1.2% of the country's population).
What is the answer to this question: How many languages have been giving the status of "national languages"?
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So...
more than 60