Science itself is young; the term "scientist" may have been coined only in 1833.

The "Planck limit" or "Planck length" (physicist, Max Planck) is, "10 to the negative 33rd power cubic centimeters" [10 ^-33cc (-10 followed by 33 zeroes)]. This formulation describes that the smallest possible fragment of the Universe would be no smaller than this size. (Physicists agree about the usefulness of this idea, though the multiplier may differ slightly among those who describe it.)

The mass of Fermions [quarks] (elementary particles): "Down": mass=333; "Up": mass=330.

The lowest temperature at which water may remain in liquid form is 33 degrees F.

Sea water pressure doubles every 33 feet of depth. The pressure increases at the rate of 1 atmosphere for every 10 m (33 ft) of depth. Ocean salinities commonly range between 33% to 38%, with an average of about 35%.

Since atmospheric pressure will support a column of water no higher than about 33 ft (10 m), a lift pump can raise water no farther than this distance.

Measurements for the Beaufort Scale (a system used to record wind speed) are made at 33 feet above ground level.

The U.S. Geological Survey (USGS), National Earthquake Information Center (World Data Center for Seismology, Denver), lists seismic activity according to depth below surface, with -33km being the shallowest grade on their scale.

The Vienna-based Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) has 337 seismic monitoring facilities around the globe, capable of detecting nuclear tests.

BIOLOGY:

The Animal Kingdom is divided into 33 phyla.

Australia’s Great Barrier Reef is the world’s largest living organism at 133,300 square miles.

There are thirty-three species in three families of seals.

The genus Halcyon, of the forest kingfishers, comprises some 33 species.

Many birds' eggs gestate in 33 days.

The raven produces 33 distinct sounds.

4/3/03: A 330-pound, 16-foot-long squid specimen - going by the scientific name mesonychoteuthis hamiltoni - caught in the Ross Sea, is said to be the largest ever found.

"Africanized killer bees" will not nest above the 33rd parallel.

On the island of Madagascar, there have evolved 33 species of lemurs from the one on the mainland of Africa, with which we share common ancestry. Chifalkas (Madagascaran lemurs) can leap 33 feet.

6/25/02: New "Bernhardi monkey" discovered in Brazil. Individuals average about 33 ounces (nearly 1 kilogram).

Recent studies confirm that, in general, the human body functions ideally with 8 hours, or 33.3%, of sleep out of each 24 day.

There are 33 vertebrae in the human spine (including coccyx as 5 bones). Through this structure pass 33 pairs of nerve groups.

Most leeches' bodies appear to be comprised of 33 segments.

In the field of "Biorhythmics," the "Intellectual Cycle" is 33 days long; the "Emotional," 28' and the "Physical," 23.

3.3-million-year-old fossilized remains of a human-like female child have been unearthed in Ethiopia's Dikika region. She had an estimated brain size of 330 cubic centimetres when she died, similar to that of a chimpanzee of the same general age.

ENVIRONMENTAL:

10/28/05: This hurricane season has seen 23 named storms, more than at any point since record-keeping began in 1851. The previous record of 21 was set in 1933. On the third day after Hurricane Katrina (2005), $33,000 had been contributed by US corporations.

9/17/04: The Centre for Research on the Epidemiology of Disasters at the University of Louvain in Belgium reports that here were 337 natural disasters reported in 2003, up from 261 in 1990. Reports of the number of people killed in the US by Hurricane Ivan vary, but the Associated Press agency said at least 33 died.

The deadly October 2005 earthquake in Pakistan and North India had its epicenter slightly North of the 33°30'N latitude, near Islamabad.

The greatest recorded tectonic uplift on land anywhere in the world (33 feet) occured at Cape Cleare, Montague Island, Prince William Sound, Alaska in 1964.

Survivors of the Dec. 2004 tsunami off of Indonesia's Sumatra island reported waves up to 33 feet high striking towns and resorts, sucking holidaymakers into the sea, surging through buildings, sweeping cars from roads and smashing a train off its rails.

Nepal's most studied glacier in Tsorong Himal underwent a 10m (33ft) retreat between 1978 and 1989.

The EPA's National-Scale Air Toxics Assessment, which is based on 1996 emissions data, produced results that are useful in understanding the quality of air and its possible effect on human health nationwide. The assessment looked at 33 air pollutants (a subset of air toxics from the Clean Air Act's list of 188 air toxics plus diesel particulate matter). Arsenic, which is Atomic Number 33, is on this list.

7/26/00: According to the World Resources Institute, [every year] 33 million acres of tropical rain forest are logged, slashed, burned, or otherwise destroyed.

9/05/00: A PBS documentary stated that Earth's CO2 has risen 33% since the Industrial Revolution.

4/6/03: Associated Press reports that, in just 20 years, poaching and the Ebola virus have cut in half the ape population of western equatorial Africa. "At current rates of decline, ape populations will drop 80 percent over the next 33 years — if not much sooner."

Typical ocean bottom trawling nets - repsonsible for what deep sea reseachers in January 2006 describe as "critically dangerous" to deep sea fish populations - measure 33 ft across.

At the end of the 2006 Canadian seal hunt in June, 2006, hunters had killed more than 336,000 seal pups -- almost all of them babies as young as 12 days old.

12/29/03: Engineers are completing plans for what may be the largest movable structure ever built - a 20,000-ton steel shell to enclose Chernobyl Reactor 4, site of an apocalyptic nuclear accident, the world's worst ever. The inside dimensions would be 803 feet across and 330 feet high.

33 percent of the world's population live in countries experiencing moderate to high water stress.

33 percent of toxic water pollution is caused by personal vehicle use.

33 percent of greenhouse CO2 is caused by transportation.

33 percent of the world's energy is consumed by developing nations.

Japan recycles approximately 33 percent of its waste, annually.

Britains eat 33 million turkeys, annually.

33 percent of all raw materials used in the U.S. go toward the production of meats, dairy products, and eggs.

Those in Chile comprise 33 percent of the world's remaining temperate rainforests.

33 percent of the Earth's land surface is desert.

SPACE SCIENCES:

The yearly Leonid Meteor Shower is at peak intensity every 33 years.

The Moon: "Blue Moons" (two full moons in the same month) occur, on average, once every 33 months; once every 33 full moons. Its mean density is 3.33 times more dense than water. Its mean orbital speed is 2,287 mi/hr; 33 minutes arc/hour. (The MOON BOOK by Kim Long, 1998.)

The mass of the Sun is approximately 333,000 times greater than that of the Earth, or 2¹⁰³³ grams; its volume is 50 octillion cubic feet, or 1,300,000 times Earth's volume, or 1.4¹⁰³³ cubic centimeters.

The Sun is a medium-sized star with a luminosity of 3.8×10 ³³ ergs per sec.

The Sun will rise at the exact same spot on the horizon every 33 years [Sun, Moon and Earth by Robin Heath, 1999].

At the Sun's equator, it takes about 25 days for the surface to rotate on its axis, but at the poles, surface rotation requires roughly 33 days (because the sun is made of gas, so different parts of its surface spin independently - unlike the surface of solid planets).

8/17/04: The Cassini-Huygens mission in orbit around Saturn has discovered two new moons around the ringed planet, bringing Saturn's total tally of natural satellites to 33.

9/2/04: The latest temperature measurements reveal that temperatures on the unlit side of Saturn's rings vary from a relatively warm -261 degrees Fahrenheit, to a cool -333 degrees Fahrenheit.

Martian temperatures are known to vary between about -133 Celsius and -3 Celsius.

The average surface temperature of Mercury is 333 °F (167 °C).

Pluto's surface temperature averages -233 °C.

Absolute Magnitude is a scale for measuring the actual brightness of a celestial object without accounting for the distance of the object from the Earth. It measures the brightness that would appear for an object as if it were exactly 10 parsecs (about 33 light years) away from Earth.

9/8/04: The Genesis Probe, returning collected bits of the Sun to the Earth, was designed to descend at 33 degrees after its parachute deploys at 33km.

2/12/01: NEAR (Near Earth Asteroid Rendezvous) marks the first landing on an asteroid, in this case "433 EROS." This asteroid measures 33m across.

The US "Deep Impact" spacecraft - the first to encounter a comet directly - smashed its impactor into the Tempel 1 comet on July 4th, 2005, at 133 million kilometres from Earth. The project cost 333 million dollars.

According to NATIONAL GEOGRAPHIC, the Mars Pathfinder landed at 19°33'N and 33°52'W, July 4, 1997.

The landing strip at Kennedy Space Centre in Florida where the shuttle lands is runway 33.

A space vehicle proposed for NASA by Lockheed-Martin, but never brought into use, was named "X33."

The "X-33 VentureStar" - a Reusable Launch Vehicle - is a technology program design (a partnership between NASA and industry) for new generation of launch vehicles that would sigificantly lower the costs of carrying payloads into space.

The largest earth-based reflective telescope [mirror] is 33 feet in diameter (5/6/02).

The world's largest radio telescope is the 330 meter dish at Arecibo in Puerto Rico's mountains.

8/20/03: A news report stated that "...the new Space Infrared Telescope Facility observatory’s 33.5-inch telescope should be the most sensitive tool ever launched into space to study the heat emitted by objects throughout the universe."

The Triangulum Galaxy M33, a slightly more distant neighbor of the Andromeda Galaxy M31, is - for most people - the most distant object visible to the naked eye. It was among the first "spiral nebulae" identified as such. Its specs are: Right Ascension 01 : 33.9 (h:m); Declination +30 : 39 (deg:m); Distance 3000 (kly). M33 is the third largest member of the Local Group, after our own galaxy, the Milky Way, and the Andromeda Galaxy. It is the nearest spiral galaxy to the Milky Way.

Perhaps the most "famous" of all nebulae is Barnard 33, the Horsehead Nebula.

The mean radius of galaxial nuclei can be considered as 0.33 light-year.

Burnham's "Celestial hand-book" lists the 33 most readily observable "double stars" in some constellations, and it inspired the amatuer astronomers group, the "33 Doubles Observing Project."

As of November 2004, the existence of a total of 33 black holes has been confirmed, both in our own galaxy and elsewhere in the universe.

MATHEMATICS:

33 is the smallest integer that can not be expressed as a sum of different triangular numbers. It is also the smallest odd repdigit that is not prime (unless one considers 1-digit integers to also be repdigits).

In the series of numbers {000...999} there are 19 "33s" [counting "333" as one]. This means that the odds of a "33" showing up in a set of 100 random, 3-digit numbers is: 1.9:100, or about two per hundred. This describes the "statistical likelihood" of finding "33s" in such sets (such as license plates with three numbers).