Weather is an all-encompassing term used to describe all of the many and varied phenomena that can occur in the atmosphere of a planet. The term is normally taken to mean the activity of these phenomena over short periods of time, usually no more than a few days in length. Average atmospheric conditions over significantly longer periods are known as climate. Usage of the two terms often overlaps and the concepts are obviously very closely related.

Basic mechanism

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Weather phenomena result from temperature differences around the globe, which arise mainly because areas closer to the tropics, around the equator, receive more energy from the Sun than more northern and southern regions, nearer to the Earth's poles.

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Denver Post: All Local News

Elation worth the wait
ksimpson@denverpost.com (By Kevin Simpson / The Denver Post) Fri, 29 Aug 2008 02:27:22 -0600
For hours, they waited.
Obama makes history, vows change
mriley@denverpost.com (Michael Riley and Karen E. Crummy / The Denver Post) Fri, 29 Aug 2008 02:15:14 -0600
Barack Obama accepted his party's nomination for president in front of a rapturous crowd Thursday, achieving a remarkable milestone in American politics even as he launched his campaign into its most critical phase.
Prosecutor gunned down outside his home
hpankratz@denverpost.com (By Howard Pankratz / The Denver Post) Fri, 29 Aug 2008 02:02:23 -0600
As law officers track the gunman who killed an Adams County prosecutor, the victim's colleagues are praising his dedication, supporting his family and wondering whether his work contributed to his death.
Accused son is ex-con
aespinoza@denverpost.com (By Annette Espinoza / The Denver Post) Fri, 29 Aug 2008 02:01:59 -0600
On Thursday the small white frame house had a hand-scrawled sign taped to the front door: "Will return soon." But Darlene Quintanilla won't be coming back.
Bests and Worsts
editor@denverpost.com (Matt Murphy, MediaNews Group ) Fri, 29 Aug 2008 02:00:55 -0600
Most expensive souvenir: $50 Obama basketball jersey.
Night full of hope, history
jarrell@denverpost.com (By John Aloysius Farrell / Special to The Denver Post) Fri, 29 Aug 2008 01:33:18 -0600
The arc of the moral universe bent a little more toward justice Thursday night. Forty-five years after the Rev. Martin Luther King Jr. urged Americans to dream of racial brotherhood, an African-American claimed the presidential nomination of a major political party on a summer night in Denver.

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