Yeoman Warders are the Tower´s special guards.
They are nicknamed beefeaters.
Pookie's Cool Facts archive.
Composite volcanoes are cone-shaped.
They build up in layers from a succession of explosive eruptions.
There are two pairs floating ribs.
These are attached only to the vertebrae of the backbone.
Bee and wasp stings have barbed ends to keep the sting in long enough to inject the poison.
Honey bees cannot pull the barb out from human skin, and so tear themselves away and die.
The platypus´s burrow can extend 100ft from the water´s edge to the nest.
It blocks the entrance to deter snakes.
The redder and coolers a star is, the dimmer it glows.
Cool red stars tend to be smaller and older.
A thecodont´s teeth grew from roots fixed into pitlike sockets in the jawbone, as in dinosaurs.
Some thecodonts resembled sturdy lizards. Other evolved into true crocodiles.
The first public lottery was held in Old St. Paul´s in 1569 to raise money for repairs.
The churchyard was famous for its booksellers, like Wynkyn de Worde in the 1400s.
Temperate climates are mild climates in the temperate zones between the tropics and the polar regions.
Summer temperatures mat average 73F. Winter temperatures may average 53F
Urine is one of your body´s ways of getting rid of waste.
Your kidneys produce urine, filtering it from your blood.
Whales keep in touch with sounds called phonations.
Large ballen whales make sounds which are too low for humans to hear, but they can be heard by other whales at least 50mi away.
Koalas are the sole living representatives of their family, but are distantly related to wombats.
The Koala grips branches with its sharp clawed hands by opposing the first two fingers to the other three
The Galilean moons are the four biggest of Jupiter's moons.
They were discovered by Galileo, centuries before astronomers identified the other, smaller ones.
Evidence for migrating dinosaurs comes from the positions of the continents at the time.
In certain regions, cool winters would have prevented the growth of enough plants for dinosaurs to eat.
The gauge (track width) used for the Stockton and Darlington was 4.7 ft, the same length as axles on horse-wagons.
This became the standard gauge in the U.S.A. and much of Europe.
In the Northern Hemisphere, winds spiral in clockwise direction out of highs, and counterclockwise into lows.
In the Southern Hemisphere, the reverse is true.
The autonomic nervous system is the body´s third nervous system.
It controls all internal body processes such as breathing automatically, without you even being aware of it.
Anacondas spend much of their lives in swampy ground or shallow water, lying in wait for victims to come and drink.
One anaconda was seen to swallow a 6 ft long caiman (a Kind of crocodile)
The aye-aye, a close relative of the lemurs, has huge ears and can hear grubs chewing wood beneath bark.
It extracts them with an elongated middle finger.
During the first half of each monthly cycle, the Moon waxes from a crescent-shaped new moon to a full moon.
During the second half, it wanes back to a crescent-shaped old moon.
Cathedrals are typically built in the shape of a cross.
The entrance of the cathedral is at the west end.
Drumlins are egg-shaped mounds of till.
Eskers are snaking ridges of drift left by streams under the ice.
Carbohydrates includes chemical substances called sugars.
Sucrose (the sugar in sugar cubes and granulated sugar) is just one of these sugars.
The best pearls come from the Pinctada pearls oysters that live in the Pacific Ocean.
The world´s biggest pearl was nearly 5 in across and weighed 14 lb. It came from a giant clam.
An elephant uses eight grinding teeth at any one time.
The teeth are replaced as they wear out- it gets through up to 48 during its lifetime.
The Universe is getting bigger by the second. We know this because all the galaxies are zooming away from us.
The further away they are, the faster they are moving.
The Gobi covers much of southern Mongolia and parts of northern China
During the Age of Dinosaurs, it was a land of scrub and scattered trees.
In electrodynamic maglevs the trains rides on repulsing magnets.
In electromagnetic maglevs, they hang from attracting magnets.
Hot spots stay in the same place while tectonic plates slide over the top of them.
Each time the place moves, the hot spot creates a new volcano.
Your digestive tract is basically a long, winding tube called the alimentary canal (gut).
It starts at your mouth and ends at your anus.
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- The dodo was a flightless bird that once lives on islands such as Mauritius in the Indian Ocean.
- Blind mole rats of the eastern Mediterranean have skin-covered eyes.
- The whiter and hotter a main sequence star is, the brighter it shines.
- The microscopic structure of the bones found in coprolites shows the age of the prey when it was eaten.