Problem: Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth's crust, or about 5 million years' worth at the current rate of extraction). However, only a tiny fraction of these reserves is economically viable, given present-day prices and technologies. Various estimates of existing copper reserves available for mining vary from 25 years to 60 years, depending on core assumptions such as the growth rate. Recycling is a major source of copper in the modern world. Because of these and other factors, the future of copper production and supply is the subject of much debate, including the concept of peak copper, analogous to peak oil.
What is a major source of cooper in modern times?
The answer is the following: Recycling

Problem: Stout and porter are dark beers made using roasted malts or roast barley, and typically brewed with slow fermenting yeast. There are a number of variations including Baltic porter, dry stout, and Imperial stout. The name Porter was first used in 1721 to describe a dark brown beer popular with the street and river porters of London. This same beer later also became known as stout, though the word stout had been used as early as 1677. The history and development of stout and porter are intertwined.
In what country was Porter beer popular in 1721?
The answer is the following: London

Problem: In the US, starting in 2013, under the Physician Financial Transparency Reports (part of the Sunshine Act), the Centers for Medicare & Medicaid Services has to collect information from applicable manufacturers and group purchasing organizations in order to report information about their financial relationships with physicians and hospitals. Data are made public in the Centers for Medicare & Medicaid Services website. The expectation is that relationship between doctors and Pharmaceutical industry will become fully transparent.
What is the Physician Financial Transparency Report part of?
The answer is the following: Sunshine Act

Problem: Madrasa (Arabic: مدرسة‎, madrasah, pl. مدارس, madāris, Turkish: Medrese) is the Arabic word for any type of educational institution, whether secular or religious (of any religion). The word is variously transliterated madrasah, madarasaa, medresa, madrassa, madraza, medrese, etc. In the West, the word usually refers to a specific type of religious school or college for the study of the Islamic religion, though this may not be the only subject studied. Not all students in madaris are Muslims; there is also a modern curriculum.
What type of educational institution does the term madrasa refer?
The answer is the following:
any type