Berkshire Hathaway Inc. () is an American multinational conglomerate holding company headquartered in Omaha, Nebraska.

The economy of the Western Cape in South Africa is dominated by the city of Cape Town, which accounted for 72.4% of the Western Cape's economic activity in 2023. The single largest contributor to the region's economy is the financial and business services sector, followed by manufacturing.

Saudi Arabia has a high-income developing economy highly reliant on its petroleum sector. Oil and gas account for approximately 22.3% of Saudi GDP and 55% of government revenue, with substantial fluctuations depending on oil prices each year.

The People's Republic of China (PRC) has a socialist market economy, incorporating industrial policies and strategic five-year plans. China has the world's second-largest economy by nominal GDP and since 2016 has been the world's largest economy when measured by purchasing power parity (PPP).

This list of English-language generic Internet top-level domains (TLD) contains generic top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet. A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database.

This is a glossary of environmental science. Environmental science is the study of interactions among physical, chemical, and biological components of the environment.

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK or U.K.) or Britain, is a sovereign country located off the northwestern coast of the European mainland. It includes the island of Great Britain, the northeastern part of the island of Ireland, and many smaller islands.

Australia has a highly developed mixed economy. As of 2026, Australia was the 12th-largest national economy by nominal GDP (gross domestic product), the 22nd-largest by PPP-adjusted GDP, and was the 21st-largest goods exporter and 24th-largest goods importer.

Nigeria has a lower-middle-income, mixed economy and emerging market, with expanding manufacturing, financial, service, communications, technology, and entertainment sectors. It is ranked as the 52nd-largest economy in the world in terms of nominal GDP, the second largest in Africa in terms of purchasing power parity,…

Circular economy (CE), or circularity, is a model of resource production and consumption that involves sharing, leasing, reusing, repairing, refurbishing, and recycling materials and products, to extend product life cycle for as long as possible. The concept aims to tackle global challenges such as climate change,…