He talked of a new Manifest Destiny and a “Golden Age.” He invoked the Rev. Martin Luther King Jr., William McKinley and Theodore Roosevelt. An honor guard appeared with tricorn hats, ...

Our world has been shaped by two all-consuming conflicts - and by a global superpower stand-off that brought the world to the brink of destruction. Explore the in-depth sections below.

We’re taking steps to better understand the impacts of climate change on the economy and to reduce our environmental footprint.