70,000,000 years bc - The grass family, Gramineae, first appears on earth.
It adapts to browsing by prehistoric creatures and outlives them, only to
be confronted by a more persistent threat: the suburban man, armed
with a lawn mower.
AD 1260 - Turf-covered banks are used as seats in British gardens.
1584 - First appearance of the word "lawn" in English.
1858 - Central Park in New York, America's first public park, created.
1871 - First lawn sprinkler patented.
1880 - 47,000 man-powered lawn mowers manufactured in the US.
1900 - First motor-driven lawn mower manufactured in the US.
1929 - First US patent issued for a power rotary mower.
1965 - Astroturf invented and installed in Houston Astrodome.
1973 - Royals Stadium opens in Kansas City, its gleaming
artifical-turf surface a shrine to falsity.
1992 - The United States Lawn Mower Racing Association is founded.
1995 - Artificial turf in Royals Stadium is ripped up and replaced
with natural turf as the tide turns and grass has the last laugh.
1997 - 12-year-old Ryan Tripp sets a world record by riding a lawn
mower 3,116 miles from Salt Lake City, Utah, to Washington, D.C.
Source: 'A Man's Turf: The Perfect Lawn,' by Warren Schultz (Clarkson N. Potter)