Most of the Earth is covered by water. About 71 percent of the planet’s surface is ocean, while the rest is land made up of ...

Africa’s official maps are stuck in the past, often either outdated, incomplete—or both. But governments don’t have the budgets to fix them, making it difficult to complete projects as complex as ...

The two halves of the African continent are moving apart at a rate of a few millimeters each year, geologists have calculated ...