in index Saddam Hussein
Hutu (African people)
Burundi volume 2 page 153
118 human disease BRITANNICA STUDENT ENCYCLOPEDIA
Kigali volume 7 page 64
Rwanda volume 11 page 110
Huygens (spacecraft)
Saturn volume 12 page 42
Hyatt, JohnWesley (U.S. inventor)
plastic volume 10 page 97
hybrid bicycle (vehicle)
bicycle volume 2 page 69
hybrid car picture, volume 1
page 237
hydra (water-dwelling animal)
MAIN ARTICLE volume 6 page 103, picture,
volume 6 page 104
Hydra (moon of Pluto)
Pluto volume 10 page 102
hydroelectric power
dam volume 4 page 9
Itaipu Dam picture, volume 10
page 31
hydrogen (chemical element)
balloon volume 2 page 15
Neptune volume 9 page 33
star volume 12 page 179
sun volume 12 page 203
water molecule picture, volume 8
page 155
hydrogen bomb (fusion device): see in
index thermonuclear bomb
hydroponics (horticulture): see in index
aquaculture
hydrosphere (Earth science)
environment volume 4 page 144
hyena (mammal)
MAIN ARTICLE volume 6 page 104, picture,
volume 6 page 104
Hyksos (ancient Asian people)
ancient Egypt volume 4 page 114
hyperactivity (psychology)
sugar volume 12 page 202
hyperlinking (computer science): see in
index hypertext
hypermetropia (visual disorder): see in
index farsightedness
hyperopia (visual disorder): see in index
farsightedness
hypertension (medical disorder)
cardiovascular system volume 3 page 40
hypertext (computer science)
Internet volume 6 page 142
hypertext markup language (computer
programming language)
Internet volume 6 page 142
hypothalamus (anatomy)
endocrine system volume 4 page 135,
picture, volume 4 page 135
hypothesis
science volume 12 page 50
I/O device (computer technology): see in
index input/output device
IAAF (international sports organization):
see in index International Association of
Athletics Federations
Iapetus (Greek mythology)
Atlas volume 1 page 222
ibis (bird)
MAIN ARTICLE volume 6 page 106, picture,
volume 6 page 106
MORE TO EXPLORE
white ibis picture, volume 14 page 26
Ibn Sa!ud (king of Saudi Arabia)
Saudi Arabia volume 12 page 44
Ibo (people): see in index Igbo
Ibsen, Henrik (Norwegian playwright
and poet)
drama volume 4 page 74
IC (electronics): see in index integrated
circuit
Icarus (Greek mythology)
Daedalus volume 4 page 4, picture, volume
4 page 4
ice (solid water)
crystal volume 3 page 226, picture, volume
3 page 226
states of matter picture, volume 8
page 78
water volume 15 page 22
ice age (geology)
MAIN ARTICLE volume 6 page 106
MORE TO EXPLORE
prehistoric life volume 10 page 146
iceberg
MAIN ARTICLE volume 6 page 107, picture,
volume 6 page 107
MORE TO EXPLORE
Arctic Ocean picture, volume 1 page 173
Titanic volume 13 page 70
ice cave (geology)
cave volume 3 page 63
ice crystal (physics)
rain volume 11 page 22
ice dancing (sport)
ice skating volume 6 page 110
ice fishing
Nunavut picture, volume 9 page 109
Iceland (island country in the North
Atlantic Ocean)
MAIN ARTICLE volume 6 page 108
MORE TO EXPLORE
canyon picture, volume 3 page 32
Crater Viti picture, volume 6 page 108
volcano volume 14 page 100
Icelandic eruption (volcanic activity)
picture, volume 14 page 102
ice rink (ice skating facility)
ice skating volume 6 page 110
ice skate (sports equipment)
different types of skates picture, volume
6 page 109
ice skating volume 6 page 109
ice skating (hobby and sport)
MAIN ARTICLE volume 6 page 109
MORE TO EXPLORE
figure skater dancing picture, volume 6
page 110
skating volume 12 page 94
speed skater picture, volume 6 page 110
types of skates picture, volume 6
page 109
Ice-T (U.S. rapper and actor)
rap volume 11 page 27
Ichan-Kala (royal court in Khiva,
Uzbekistan) picture, volume 14 page 47
ICJ (United Nations): see in index International
Court of Justice
BRITANNICA STUDENT ENCYCLOPEDIA ICJ 119
ICRC (Swiss aid organization): see in
index International Committee of the
Red Cross
ICU (hospital area): see in index intensive
care unit
Idaho (state in the U.S.)
MAIN ARTICLE volume 6 page 111
MORE TO EXPLORE
geography
Bitterroot Mountains picture, volume
6 page 112
irrigated field picture, volume 6
page 161
Saint Joe National Forest picture, volume
9 page 44
State Capitol picture, volume 2
page 100
Idaho Territory (historical territory in
the U.S.)
Idaho volume 6 page 112
identical twin picture, volume 5 page 94
genetics volume 5 page 94
Ides of March (Roman history)
Caesar volume 3 page 8
Iditarod (sled dog race in Alaska, U.S.)
MAIN ARTICLE volume 6 page 113, picture,
volume 6 page 113
IDL: see in index International Date Line
Ifalik (island in the Federated States of
Micronesia)
islander using fishing nets picture, volume
8 page 119
Igbo (people)
Nigeria volume 9 page 68
igloo (dwelling)
Eskimo volume 4 page 153
Eskimo family picture, volume 4
page 153
igneous rock (geology)
rock volume 11 page 75
ignition point (physics)
combustion volume 3 page 165
fire volume 5 page 25
Iguacu Falls (waterfall in Argentina and
Brazil): see in index Iguazu Falls
iguana (lizard)
MAIN ARTICLE volume 6 page 113, picture,
volume 6 page 113
MORE TO EXPLORE
lizard volume 7 page 169
Iguanodon (dinosaur)
MAIN ARTICLE volume 6 page 114, picture,
volume 6 page 114
MORE TO EXPLORE
dinosaurs in scale picture, volume 4
page 53