World(WO)

This is a list of Columbiformes species by global population. While numbers are estimates, they have been made by the experts in their fields. For more information on how these estimates were ascertained, see Wikipedia's articles on population biology and population ecology.

Most of the world's largest oilfields are located in the Middle East, but there are also supergiant (>10 billion bbls) oilfields in India, Brazil, Mexico, Venezuela, Kazakhstan, and Russia.

This is a list of solar thermal power stations. These include the 354 megawatt (MW) Solar Energy Generating Systems power installation in the USA, Solana Generating Station (USA, 280 MW) and Solaben Solar Power Station (Spain, 200 MW). The 392 MW Ivanpah Solar Power Facility, located in California's Mojave Desert, is the world’s largest solar thermal power plant project currently in operation. There are plans to build many other large solar thermal plants.

The Three Gorges Dam in Hubei, China, has the world's largest instantaneous generating capacity (22,500 MW), with the Itaipu Dam in Brazil/Paraguay in second place (14,000 MW).

This list of longest tunnels in the world ranks tunnels that are at least 13 km (43,000 ft) long. Only continuous tunnels are included, pipelines (also buried) are excluded. The longest have been constructed for water distribution, followed by tunnels for railways. Both uses are highly sensitive to gradients.

This is a list of the world's longest bridges more than two kilometres long sorted by their full length above land or water.