Coral reefs cover under one percent of the sea
Reefs occupy less than one percent of the ocean floor but support around a quarter of all marine species.
Author not specified in the imported source
Oceans · Around the World
External reference (site language): Oceans Seven ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Most of the ocean is unmapped in detail
We have better high-resolution maps of Mars than of our own seabed, though mapping projects are closing the gap.
Author not specified in the imported source
Oceans · Around the World
External reference (site language): Oceans Seven ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Passports were standardised after WWI
The modern passport with a photo and standard booklet emerged from a 1920 League of Nations conference.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Time zones came from railways
Before railways every town kept its own solar time. Standard time zones were adopted to make timetables possible.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
The date line zigzags on purpose
The international date line bends around island groups so countries are not split across two calendar days.
Author not specified in the imported source
Pacific · Around the World
External reference (site language): Pacific Ocean ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Jet lag is worse flying east
The body finds it easier to lengthen a day than shorten one, so westward flights usually feel gentler.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Aircraft windows have a tiny hole
The small bleed hole in a cabin window equalises pressure so the outer pane bears the load.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Cabin air is drier than most deserts
Relative humidity on a long-haul flight often drops below 20 percent, which is why you feel thirsty.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Food tastes blander at altitude
Low pressure and dry air dull sweet and salty perception, so airline meals are seasoned more heavily.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Black boxes are orange
Flight recorders are painted bright orange with reflective tape so search teams can spot them.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Airport codes can be historical
Chicago O'Hare uses ORD from its old name Orchard Field, long after the orchard disappeared.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
The shortest scheduled flight is 90 seconds
The hop between Westray and Papa Westray takes about a minute and a half in fair wind.
Author not specified in the imported source
Orkney, Scotland · Around the World
External reference (site language): Orkney ↗
Imported text; story or fact not individually verified. A reference may provide background only.
The longest flights exceed 18 hours
Ultra-long-haul routes such as Singapore to New York run close to 19 hours nonstop.
Author not specified in the imported source
World · Around the World
External reference (site language): World's longest domestic flight ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Contrails are frozen water
Contrails form when hot humid exhaust meets cold air and freezes, which is why they appear only at altitude.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Turbulence rarely damages aircraft
Wings are tested to flex far beyond anything turbulence produces. The discomfort is real, the danger mostly is not.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Duty free began in Ireland
The first duty-free shop opened at Shannon Airport in 1947 to serve transatlantic refuelling stops.
Author not specified in the imported source
Shannon, Ireland · Around the World
External reference (site language): Shannon Airport ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Suitcases got wheels late
Wheeled luggage was only patented in 1970, and the upright rolling case with a long handle arrived in 1987.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Hotel keys became cards in the 1970s
Magnetic stripe keycards were introduced to solve the expensive problem of guests walking off with metal keys.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Room 420 signs get stolen
Some hotels skip or renumber room 420 because the sign disappears so often.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Many buildings skip floor 13
Superstition means a large share of tall buildings label the 13th floor as 14, especially in North America.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Some Asian buildings skip floor four
In Chinese, Japanese and Korean the word for four sounds like death, so floors and room numbers often omit it.
Author not specified in the imported source
East Asia · Around the World
External reference (site language): East Asia ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Tipping customs vary wildly
Tipping is expected in the United States, unusual in Japan where it can cause offence, and rounded up in much of Europe.
Author not specified in the imported source
World · Around the World
External reference (site language): World (disambiguation) ↗
Imported text; story or fact not individually verified. A reference may provide background only.
The nod does not mean yes everywhere
In Bulgaria and parts of Greece a head shake can mean yes and a nod can mean no.
Author not specified in the imported source
Bulgaria · Around the World
External reference (site language): Bulgaria ↗
Imported text; story or fact not individually verified. A reference may provide background only.
Thumbs up is rude in some places
The thumbs-up gesture is offensive in several countries, so travellers are safer with words.
Author not specified in the imported source
Middle East and West Africa · Around the World
External reference (site language): Middle East and North Africa ↗
Imported text; story or fact not individually verified. A reference may provide background only.