George W Bush, a former oilman, denies the existence of global warming.

BBC: US blind eye on climate change

It affects almost every aspect of human life, from food and water to public safety, as cash-strapped states and cities and towns try to deal with massive wildfires, and the conditions are almost assuredly a result of, and exacerbated by, the global climate crisis the existence of which one entire half of our political spectrum is dedicated to denying.

FORBES: Beneath a Parched Surface, the Great Midwest Drought of 2012 Doesn't Go Social

If the Ukraine story has a moral, it is that energy security depends on the existence of a global market free from political interference, plus maximum diversity of supply.

ECONOMIST: Energy security

The outgoing Olmert government may well lead the Western world in its attempts to deny the existence of the global jihad which has marked Israel as its central battlefield.

CENTERFORSECURITYPOLICY: The jihadist-multicultural alliance

Rather than acknowledge the existence and threat of the global jihad to US national security, Clinton pressured the global jihad's primary victim - Israel - into transferring its heartland and capital to the godfather of modern terrorism.

CENTERFORSECURITYPOLICY: Condi's embrace of jihadist 'peace'

These mergers are being seen as a step towards the creation of global financial exchanges, a glint in the eye of anyone for whom the existence of the national bourse is as quaint as the existence of the national airline.

ECONOMIST: The prospect of a transatlantic merger is long overdue

Metal-forming technologies have been in existence for thousands of years, but came into widespread use with the global industrialization that began to occur in the latter part of the nineteenth century.

FORBES: China's Manufacturing Prowess

The Dutch official steered the UNFCCC through the most tortuous phase of its existence, spanning the Bali summit of 2007 that promised a new comprehensive global agreement within two years and the Copenhagen summit of 2009 that failed to deliver such an agreement.

BBC: UN picks new climate change chief