2009-2010 Article Index

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The following abbreviations are used in this index: S-September; O-October; N-November; D-December; Ja-January; F-February; Mr-March; Ap-April; My-May; T-Teacher’s Edition. Numbers before hyphens indicate dates; after hyphens, page numbers.

ADAPTATIONS
Chill Bill, O26-4
Peekaboo, Mr15/Ap5-3

AFRICA
Ocean of the Future (activity), Mr15/Ap5-27
Ocean of the Future (with map), Mr15/Ap5-24

ALCOR
Stellar Find, Ap19-4

ALGORITHMS
Pop Prediction, Mr15/Ap5-16

ALTERNATIVE ENERGY
Futuristic Wheels, N9/23-12

AMAZON
Rain Forest Rebound (with graph), My10-6

AMPHIBIANS
An Uphill Climb (with map), Mr15/Ap5-22

AMUNDSEN, ROALD
A Dangerous Race (with timeline), My10-18
Route to the South Pole (activity), My10-T7 

ANIMAL ADAPTATIONS
Revealing Marsupials (with map), D7-14
Vegetarian Spider, Ja11-4

ANIMAL BEHAVIOR
Chuckling Chimps, O5-5
Whinnies Decoded, N9/23-3

ANTARCTICA
A Dangerous Race (with timeline), My10-18
Route to the South Pole (activity), My10-T7
Too Many Tourists (with graph), S7-3

ANTIBACTERIAL SOAPS
Is it true that if you use too much antibacterial soap and hand gel the germs become immune? Ap19-24

ART
Art Sleuth (activity), F22-11
Art Sleuth (with diagram), F22-8
Living Art, Ap19-3
More of Leonardo's Mysteries (activity), F22-T6

ASK SCIENCE WORLD
How are asteroids formed? My10-24
How many different layers of rock are in the Grand Canyon? Mr15/Ap5-32
Is it true that if you use too much antibacterial soap and hand gel the germs become immune? Ap19-24
What are warts? O26-24
What do panda bears eat? F22-16
What is plaque? D7-16
What makes metals good conductors? F1-24
What's happening when I crack my knuckles, and is it bad for me? N9/23-32
Why do fruits change colors when they get ripe? Ja11-24
Why do male lions have large manes, but females don't? S21-16
Why do mosquito bites itch?, S7-24
Why is the sun yellow and orange? O5-24

ASTEROIDS
How are asteroids formed? My10-24 

ASTRONOMY
I Want THAT Job! (cultural astronomer), Mr15/Ap5-21
Planet Hunt (with graph), My10-5

ATOMIC PARTICLES
Art Sleuth (activity), F22-11
Art Sleuth (with diagram), F22-8

ATOMS
First Look, D7-4
Saving the Ozone Layer (activity), S7-21
Saving the Ozone Layer (with diagram), S7-18

BACTERIA
Is it true that if you use too much antibacterial soap and hand gel the germs become immune? Ap19-24
Slimy Blobs, N9/23-25

BASEBALL
Ball Tracker, O26-3

BATS
Real-Life Bloodsuckers (activity), O26-11
Real-Life Bloodsuckers, O26-8

BEARS
Disease Prevention (activity), F1-T6
Learning From Bears (with diagram), F1-8

BEDBUGS
Bedbugs Are Back! (activity), S7-T6
Biting Back, S7-8

BEES
Nests That Please Bees, S21-10

BIG DIPPER
Stellar Find, Ap19-4

BIODIVERSITY
Lights, Camera, Action! (with map), Ap19-8
Rain Forest Rebound (with graph), My10-6

BIOLUMINESCENCE
Living Art, Ap19-3

BIRD POPULATIONS
Tagged, You're It! Mr15/Ap5-12
Tagged, You're It! (activity), Mr15/Ap5-15

BIRDS
Precious Poop (with map and diagram), F1-16

BLOOD
Cures From the Field (with diagram), O5-8

BREAD
Ghastly Baked Goods, O26-22

BROWNFIELDS
Cleaning Up Soiled Sites, S21-6

BUOYANCY
Floating Festival (with diagram), F22-6

BUTTERFLIES
Butterfly Ears, Ja11-3

CACTUSES
Cactus Trackers (with map), O26-12

CALORIES
Plumped Up Portions, N9/23-8

CANDLES
Candle Caution, N9/23-5

CARBON FOOTPRINT
Phones, Facebook, and the Environment, N9/23-26

CAREERS
I Want THAT Job! (cultural astronomer), Mr15/Ap5-21
I Want THAT Job! (eco-police), Ap19-19
I Want THAT Job! (environmental lawyer), Ja11-19
I Want THAT Job! (guitar designer), N9/23-17
I Want THAT Job! (marine biologist), F1-19
I Want THAT Job! (robot scientist), S7-13
I Want THAT Job! (roller-coaster engineer), My10-11
I Want THAT Job! (seismologist), O26-15
I Want THAT Job! (wildlife refuge manager), O5-11

CARS
Virtual Driving, Ja11-6

CAVES
Cave Poop, Mr15/Ap5-4

CAVITIES
Cavity Detector, F22-4

CHAMELEONS
Catching Some Rays (with graph), S7-4

CHANGES OF STATE
Secrets of a Snowflake (activity), D7-13
Secrets of a Snowflake (with diagram), D7-10

CHARTS
All Caught Up (with graph), S21-13
Silk States (activity), O26-T7
Your Guide to a Winning Display, S21-T5

CHEMISTRY
Candle Caution, N9/23-5
Ingredients for a Good Hair Day, N9/23-18
Name That Element! (bismuth), Ja11-16
Name That Element! (chromium), N9/23-14
Name That Element! (iridium), Mr15/Ap5-18

CHIMPANZEES
Chuckling Chimps, O5-5

CHOCOLATE
Sweet Stress-Buster, F1-4

CIRCULATORY SYSTEM
Mighty Heart (with graph), F22-5

CITIZEN SCIENCE
Tagged, You're It! Mr15/Ap5-12
Tagged, You're It! (activity), Mr15/Ap5-15

CLAWS
Monstrous Talons (with graph), O5-6

CLIMATE CHANGE
A Whole New World (with map), Ap19-20
An Uphill Climb (with map), Mr15/Ap5-22
Phones, Facebook, and the Environment, N9/23-26
Shrinking Sheep (with graph), O26-7

COCKROACHES
Insect Repellent, D7-3

COCONUTS
Peekaboo, Mr15/Ap5-3

COCOONS
Cocooned Car, F1-22

COLORBLINDNESS
Color Vision, D7-4

COMBUSTION
Full Steam Ahead, S7-6

COMPOST
Green Garbage (with graph), Ja11-5

COMPUTERS
Say "Cheese?" O5-5

CONDUCTIVITY
Clever Cup, Mr15/Ap5-7
What makes metals good conductors? F1-24

CONSERVATION
Conservation Costs (with graph), Ja11-7
I Want THAT Job! (eco-police), Ap19-19
Precious Poop (with map and diagram), F1-16
Predators in Peril (with diagram), My10-8
Wolves in Decline (with graph), Ap19-6

COSTA RICA
Lights, Camera, Action! (with map), Ap19-8

CRITICAL THINKING
What Do You Want to Know? (activity), D7-T7

DA VINCI, LEONARDO
Art Sleuth (activity), F22-11
Art Sleuth (with diagram), F22-8
More of Leonardo's Mysteries (activity), F22-T6

DENSITY
Floating Festival (with diagram), F22-6

DESERTS
Cactus Trackers (with map), O26-12

DINOSAURS
Monstrous Talons (with graph), O5-6

DOGS
Dogs to the Rescue (activity), My10-17
Dogs to the Rescue (with map and diagram), My10-14

DOODLING
Battling Boredom, S21-4

EARS
Hairy Hearing, Ap19-22
Talk to the Arm, Ja11-22

ECO-POLICE
I Want THAT Job! (eco-police), Ap19-19

EARTHQUAKES
Devastating Quake (with map), F22-4
Dogs to the Rescue (with map and diagram), My10-14
I Want THAT Job! (seismologist), O26-15
Quake Alert (with graph), Mr15/Ap5-5
Wave of Destruction (activity), F1-15
Wave of Destruction (with map and diagram), F1-12

ECOSYSTEMS
Restoring the Everglades (with map), D7-6

ELECTROMAGNETIC SPECTRUM
Deadly Rays, My10-12
Eye-Popping TV, My10-7
Free Range, F1-7
Star Tour (with diagram), Ja11-20

ELEMENTS
Name That Element! (bismuth), Ja11-16
Name That Element! (chromium), N9/23-14
Name That Element! (iridium), Mr15/Ap5-18

ENDANGERED SPECIES
Born in the USA (with map and diagram), Ja11-12
Conservation Costs (with graph), Ja11-7
Endangered in the Everglades (activity), D7-T6
In Search of Snow Leopards (with map and graph), S7-14
Wild Lemurs (activity), Ja11-T7

ENERGY
Out to Dry, Ap19-7

ENVIRONMENTAL LAWYER
I Want THAT Job! (environmental lawyer), Ja11-19

EPIDEMIOLOGY
Disease Detectives (with diagram), O5-12

EROSION
How many different layers of rock are in the Grand Canyon? Mr15/Ap5-32

ESTUARIES
Oyster Gardeners (with map and diagram), O5-16

EVERGLADES
Endangered in the Everglades (activity), D7-T6
Restoring the Everglades (with map), D7-6

EXOPLANETS
Planet Hunt (with graph), My10-5

EXPLORERS
A Dangerous Race (with timeline), My10-18
Route to the South Pole (activity), My10-T7 

FACIALS
Mucky Face Mask, Mr15/Ap5-30

FARMING
Futuristic Farm (with diagram), Ap19-12

FEET
Fast Feet, My10-4 

FLU
Disease Detectives (with diagram), O5-12
Flu Season (activity), O5-T6
On Alert, S7-5
Pets Catch Flu (with graph), F1-6

FOG
Gathering Mist (with graph), O5-7

FOOD SCIENCE
No-Drip Ice Cream, O26-5

FOOD WEBS
Predators in Peril (with diagram), My10-8
Wolves in Decline (with graph), Ap19-6

FOOTBALL
Cures From the Football Field (with diagram), O5-8

FORCES AND MOTION
Smashing Pumpkins (with diagram), O26-16
Tinkering With Trebuchets (activity), O26-T6
Turbo Tricycle, F1-3

FOSSILS
Dig This! (activity), S7-T7
Monstrous Talons (with graph), O5-6
Teen Dinosaur Hunters (with diagram), S7-10

FREE RADICALS
Mucky Face Mask, Mr15/Ap5-30

FRICTION
Snake Gait, S21-4

FRUIT
Why do fruits change colors when they get ripe? Ja11-24

FUNGI
Special Delivery, Ap19-4

GENES
Color Vision, D7-4

GENETICS
Red Dread (with graph), O26-5

GEOLOGY
Rockhounds (with diagram), Ja11-8

GHOST NETS
All Caught Up (with graph), S21-13

GIRAFFES
Mighty Heart (with graph), F22-5

GLACIERS
A Whole New World (with map), Ap19-20
Cool Vacation (with map), F22-12
Glacial Shifts (activity), F22-T7

GLOBAL WARMING
A Whole New World (with map), Ap19-20
Feeling the Heat, My10-4
Heating Up (with graph), F1-5

GOATS
Landscaping Goats, F1-4

GOLDBERG, RUBE
One Zany Device, F1-20 

GRAND CANYON
How many different layers of rock are in the Grand Canyon? Mr15/Ap5-32

GRAPHING
Bedbugs Are Back! (activity), S7-T6
Breaking Down Plastics (activity), Ap19-T8
Cancer Threat (activity), My10-T6
Disease Prevention (activity), F1-T6
Endangered in the Everglades (activity), D7-T6
Flu Season (activity), O5-T6
Glacial Shifts (activity), F22-T7
Going for the Gold (activity), Mr15/Ap5-T7
Hard as a Rock (activity), Ja11-T6
Portion Distortion (activity), N9/23-T7
Your Guide to a Winning Display, S21-T5

GRASSES
Cleaning Up Soiled Sites, S21-6

GRAVITY
Back in the Game, Mr15/Ap5-8

GROSS OUT
Achy Snake, My10-22
Cocooned Car, F1-22
Ghastly Baked Goods, O26-22
Hairy Hearing, Ap19-22
Mucky Face Mask, Mr15/Ap5-30
Slimy Blobs, N9/23-25
Squishy Snack, S7-22
Talk to the Arm, Ja11-22
Twisted Trick, O5-22

GUANO
Precious Poop (with map and diagram), F1-16

GUITARS
I Want THAT Job! (guitar designer), N9/23-17

HAIR
Hairy Hearing, Ap19-22
Ingredients for a Good Hair Day, N9/23-18

HAITI
Devastating Quake (with map), F22-4
Dogs to the Rescue (with map and diagram), My10-14

HANDS-ON SCIENCE
Art Sleuth (activity), F22-11
Dogs to the Rescue (activity), My10-17
Folding Frenzy (activity), O5-T7
Futuristic Farm (activity), Ap19-15
Ocean of the Future (activity), Mr15/Ap5-27
Oyster Gardeners (activity), O5-19
Real-Life Bloodsuckers (activity), O26-11
Rockhounds (activity), Ja11-11
Saving the Ozone Layer (activity), S7-21
Secrets of a Snowflake (activity), D7-13
Tagged, You're It! (activity), Mr15/Ap5-15
Wave of Destruction (activity), F1-15

HIBERNATION
Disease Prevention (activity), F1-T6
Learning From Bears (with diagram), F1-8

HORMONES
Sweet Stress-Buster, F1-4

HORSES
Whinnies Decoded, N9/23-3

HOT-AIR BALLOONS
Floating Festival (with diagram), F22-6

HUMAN BEHAVIOR
Your Teenage Brain (with diagram), N9/23-22

HUMAN BODY
Fast Feet, My10-4 

HUMAN BRAIN
Your Teenage Brain (with diagram), N9/23-22

HYDROPONICS
Futuristic Farm (with diagram), Ap19-12

ICE CREAM
No-Drip Ice Cream, O26-5

ID CARDS
Say "Cheese?" O5-5

INJURIES
Cures From the Field (with diagram), O5-8

INK
Sketched Squid, N9/23-7

INSECTS
Biting Back, S7-8
Cocooned Car, F1-22
Insect Repellent, D7-3
Squishy Snack, S7-22
Why do mosquito bites itch?, S7-24

JACOBUS BROTHERS
Lights, Camera, Action! (with map), Ap19-8

JETS
Vapor Trail, O5-4

KEPLER MISSION
Planet Hunt (with graph), My10-5 

KNUCKLES
What's happening when I crack my knuckles, and is it bad for me? N9/23-32

LASERS
Cavity Detector, F22-4

LAUNDRY
Out to Dry, Ap19-7

LEMURS
Born in the USA (with map and diagram), Ja11-12
Wild Lemurs (activity), Ja11-T7

LIFE CYCLES
Secrets of Silk, O26-18

LIGHTNING
Locating Lightning, F22-3

MACHINES
Once Zany Device, F1-20

MADAGASCAR
An Uphill Climb (with map), Mr15/Ap5-22

MAPS
A Whole New World (with map), Ap19-20
Dig This! (activity), S7-T7
Map the Territories (activity), F1-T7
Route to the South Pole (activity), My10-T7

MARINE BIOLOGIST
I Want THAT Job! (marine biologist), F1-19

MARSUPIALS
Revealing Marsupials (with map), D7-14
What Do You Want to Know? (activity), D7-T7

MATERIALS SCIENCE
Special Delivery, Ap19-4

MEDICINE
Disease Prevention (activity), F1-T6
Learning From Bears (with diagram), F1-8

MEMORY
Battling Boredom, S21-4

MENTAL HEALTH
Tracking Blogs (with graph), N9/23-4

METALS
Shark Stopper, N9/23-5
What makes metals good conductors? F1-24

MICROBES
Cave Poop, Mr15/Ap5-4
Living Art, Ap19-3

MIGRATION
Tagged, You're It! Mr15/Ap5-12

MOHS HARDNESS SCALE
Hard as a Rock (activity), Ja11-T6
Rockhounds (activity), Ja11-11

MOLECULES
First Look, D7-4

MONKEYS
Color Vision, D7-4

MOONS
Cool Craters (with graph), D7-5
Water World (with graph), N9/23-6

MOSQUITOES
Why do mosquito bites itch?, S7-24

MOUNTAINS
Cool Vacation (with map), F22-12
Glacial Shifts (activity), F22-T7

MUGS
Clever Cup, Mr15/Ap5-7

MUSIC
Pop Prediction, Mr15/Ap5-16

MUTUALISM
Treetop Toilet, O5-3

NATIONAL PARKS
Honoring Parks (with graph), Mr15/Ap5-6

NATURAL RESOURCES
Honoring Parks (with graph), Mr15/Ap5-6

NEWTON'S LAWS
Back in the Game, Mr15/Ap5-8
Going for the Gold (activity), Mr15/Ap5-T7

NORTH PACIFIC GYRE
Floating Junkyard (with map and diagram), Ap19-16

NUTRITION
Plumped Up Portions, N9/23-8
Portion Distortion (activity), N9/23-T7

OCEANS
Floating Junkyard (with map and diagram), Ap19-16
Ocean of the Future (activity), Mr15/Ap5-27
Ocean of the Future (with map), Mr15/Ap5-24

OCTOPUS
Peekaboo, Mr15/Ap5-3

OPOSSUMS
Revealing Marsupials (with map), D7-14

ORANGUTANS
Snap-Happy Ape, My10-3 

ORIGAMI
Folding Frenzy (activity), O5-T7
Operation Origami, O5-20

OYSTERS
Oyster Gardeners (activity), O5-19
Oyster Gardeners (with map and diagram), O5-16

OZONE
Saving the Ozone Layer (activity), S7-21
Saving the Ozone Layer (with diagram), S7-18

PALEONTOLOGY
Dig This! (activity), S7-T7
Teen Dinosaur Hunters (with diagram), S7-10

PANDA BEARS
What do panda bears eat? F22-16

PARALYMPICS
Back in the Game, Mr15/Ap5-8
Going for the Gold (activity), Mr15/Ap5-T7

PARASITES
Bedbugs Are Back! (activity), S7-T6
Biting Back, S7-8
Real-Life Bloodsuckers, O26-8

PERIODIC TABLE
Name That Element! (bismuth), Ja11-16
Name That Element! (chromium), N9/23-14
Name That Element! (iridium), Mr15/Ap5-18

PERMAFROST
A Whole New World (with map), Ap19-20

PERU
Gathering Mist (with graph), O5-7
Precious Poop (with map and diagram), F1-16

PETS
Pets Catch Flu (with graph), F1-6

PHASE CHANGES
Clever Cup, Mr15/Ap5-7

PHEROMONES
Insect Repellent, D7-3

PHOTOSYNTHESIS
Futuristic Farm (activity), Ap19-15
Futuristic Farm (with diagram), Ap19-12

PHYSIOLOGY
Learning From Bears (with diagram), F1-8

PITCHER PLANTS
Treetop Toilet, O5-3

PLAQUE
What is plaque? D7-16

PLASTICS
Breaking Down Plastics (activity), Ap19-T8
Floating Junkyard (with map and diagram), Ap19-16

PLATE TECTONICS
Ocean of the Future (activity), Mr15/Ap5-27
Ocean of the Future (with map), Mr15/Ap5-24

POLAR REGIONS
A Dangerous Race (with timeline), My10-18
Route to the South Pole (activity), My10-T7 

POLLUTION
Breaking Down Plastics (activity), Ap19-T8
Floating Junkyard (with map and diagram), Ap19-16

POLLUTION
Green Garbage (with graph), Ja11-5

PORTION SIZES
Plumped Up Portions, N9/23-8
Portion Distortion (activity), N9/23-T7

PREDATORS
Predators in Peril (with diagram), My10-8 

PRIMATES
Born in the USA (with map and diagram), Ja11-12

PROCEDURE
Nests That Please Bees, S21-10

PUMPKINS
Smashing Pumpkins (with diagram), O26-16

QUARTERS
Honoring Parks (with graph), Mr15/Ap5-6

RADAR
Ball Tracker, O26-3

RADIATION
Solar Flare-Up (with graph), S21-3

RAIN FORESTS
Lights, Camera, Action! (with map), Ap19-8
Rain Forest Rebound (with graph), My10-6

READING COMPREHENSION
More of Leonardo's Mysteries (activity), F22-T6
Wild Lemurs (activity), Ja11-T7

RECYCLING
Would You Drink Toilet Water? N9/23-20

REDHEADS
Red Dread (with graph), O26-5

RESTORATION
Restoring the Everglades (with map), D7-6

RIPENING
Why do fruits change colors when they get ripe? Ja11-24

ROBOTS
Fishy Robots, S7-7
I Want THAT Job! (robot scientist), S7-13

ROCKS
Hard as a Rock (activity), Ja11-T6
Rockhounds (activity), Ja11-11
Rockhounds (with diagram), Ja11-8

ROLLER COASTERS
I Want THAT Job! (roller-coaster engineer), My10-11

RUNNING
Fast Feet, My10-4 

SAGUAROS
Cactus Trackers (with map), O26-12

SANGUIVORES
Real-Life Bloodsuckers (activity), O26-11
Real-Life Bloodsuckers, O26-8

SCIENCE BARGE
Futuristic Farm (activity), Ap19-15
Futuristic Farm (with diagram), Ap19-12

SCIENTIFIC PROJECTS
All Caught Up (with graph), S21-13
Cleaning Up Soiled Sites, S21-6
Nests That Please Bees, S21-10

SCIENTIFIC METHOD
Cleaning Up Soiled Sites, S21-6 

SCOTT, ROBERT
A Dangerous Race (with timeline), My10-18
Route to the South Pole (activity), My10-T7 

SEA LEVEL
A Whole New World (with map), Ap19-20

SEA TURTLES
Feeling the Heat, My10-4 

SEISMOLOGIST
I Want THAT Job! (seismologist), O26-15

SENSES
Achy Snake, My10-22
Dogs to the Rescue (activity), My10-17
Dogs to the Rescue (with map and diagram), My10-14 

SEWAGE
Would You Drink Toilet Water? N9/23-20

SHAMPOO
Ingredients for a Good Hair Day, N9/23-18

SHARKS
Predators in Peril (with diagram), My10-8
Shark Stopper, N9/23-5

SHEEP
Shrinking Sheep (with graph), O26-7

SILK ROAD
Secrets of Silk, O26-18
Silk States (activity), O26-T7

SILKWORMS
Secrets of Silk, O26-18

SKIN CANCER
Cancer Threat (activity), My10-T6
Deadly Rays, My10-12 

SLEEP
Sleep Deprived (with graph), Ap19-5

SMOKEY THE BEAR
Birthday Bear, O26-6

SNAKES
Achy Snake, My10-22
Snake Gait, S21-4
Twisted Trick, O5-22

SNOW LEOPARDS
In Search of Snow Leopards (with map and graph), S7-14

SNOWFLAKES
Secrets of a Snowflake (with diagram), D7-10

SOCCER
Eye-Popping TV, My10-7 

SOLAR FLARE
Solar Flare-Up (with graph), S21-3

SOLAR POWER
Futuristic Wheels, N9/23-12
Pint-Size Powerhouses, Mr15/Ap5-4

SOUND
Butterfly Ears, Ja11-3
Talk to the Arm, Ja11-22
Vapor Trail, O5-4

SPACE
Cool Craters (with graph), D7-5
To Infinity and Beyond, Ja11-4

SPIDERS
Vegetarian Spider, Ja11-4

SQUID
Sketched Squid, N9/23-7

STARS
Star Tour (with diagram), Ja11-20
Stellar Find, Ap19-4

STRESS
Sweet Stress-Buster, F1-4

SUN
Solar Flare-Up (with graph), S21-3
Why is the sun yellow and orange? O5-24

SUPERNOVAE
Star Tour (with diagram), Ja11-20

SWIFT, TAYLOR
Pop Prediction, Mr15/Ap5-16

TANNING
Deadly Rays, My10-12 

TECHNOLOGY
Art Sleuth (activity), F22-11
Art Sleuth (with diagram), F22-8
Cavity Detector, F22-4
Cures From the Football Field (with diagram), O5-8
First Look, D7-4
Fishy Robots, S7-7
Folding Frenzy (activity), O5-T7
Full Steam Ahead, S7-6
I Want THAT Job! (roller-coaster engineer), My10-11
One Zany Device, F1-20
Operation Origami, O5-20
Phones, Facebook, and the Environment, N9/23-26
Pint-Size Powerhouses, Mr15/Ap5-4
Pop Prediction, Mr15/Ap5-16
Quake Alert (with graph), Mr15/Ap5-5
Snap-Happy Ape, My10-3
Tracking Blogs (with graph), N9/23-4
Turbo Tricycle, F1-3
Virtual Driving, Ja11-6
Wave of Destruction (with map and diagram), F1-12

TEENS
All Caught Up (with graph), S21-13
Cool Vacation (with map), F22-12
Futuristic Wheels, N9/23-12
Lights, Camera, Action! (with map), Ap19-8
Nests That Please Bees, S21-10
One Zany Device, F1-20
Oyster Gardeners (with map and diagram), O5-16
Predators in Peril (with diagram), My10-8
Rockhounds (with diagram), Ja11-8
Secrets of a Snowflake (with diagram), D7-10
Sleep Deprived (with graph), Ap19-5
Smashing Pumpkins (with diagram), O26-16
Tagged, You're It! Mr15/Ap5-12
Teen Dinosaur Hunters (with diagram), S7-10
Virtual Driving, Ja11-6

TEETH
What is plaque? D7-16

TELEVISIONS
Eye-Popping TV, My10-7
Free Range, F1-7

TENSION
All Caught Up (with graph), S21-13

TICKS
Real-Life Bloodsuckers, O26-8

TOUCANS
Chill Bill, O26-4

TOURISTS
Too Many Tourists (with graph), S7-3

TOY STORY
To Infinity and Beyond, Ja11-4

TREBUCHETS
Smashing Pumpkins (with diagram), O26-16
Tinkering With Trebuchets (activity), O26-T6

TREE SHREWS
Treetop Toilet, O5-3

TRICYCLE
Turbo Tricycle, F1-3

TSUNAMIS
Map the Territories (activity), F1-T7
Wave of Destruction (activity), F1-15
Wave of Destruction (with map and diagram), F1-12

TWITTER
Quake Alert (with graph), Mr15/Ap5-5

U.S. TERRITORIES
Map the Territories (activity), F1-T7
Wave of Destruction (with map and diagram), F1-12

UV RAYS
Cancer Threat (activity), My10-T6
Deadly Rays, My10-12 

VACCINES
Disease Detectives (with diagram), O5-12

VERTEBRATES
Catching Some Rays (with graph), S7-4

VIRUSES
Disease Detectives (with diagram), O5-12
Flu Season (activity), O5-T6
On Alert, S7-5
Pets Catch Flu (with graph), F1-6

VITAMIN D
Catching Some Rays (with graph), S7-4

VOLCANOES
Ocean of the Future (with map), Mr15/Ap5-24

WARTS
What are warts? O26-24

WATER
Water World (with graph), N9/23-6

WATER CYCLE
Would You Drink Toilet Water? N9/23-20

WATERSPOUTS
Raining Burgers, S7-4

WEATHER
Floating Festival (with diagram), F22-6
Heating Up (with graph), F1-5
Locating Lightning, F22-3
Raining Burgers, S7-4
Secrets of a Snowflake (with diagram), D7-10

WETLANDS
Restoring the Everglades (with map), D7-6

WILDFIRES
Birthday Bear, O26-6
Landscaping Goats, F1-4

WILDLIFE REFUGES
I Want THAT Job! (wildlife refuge manager), O5-11

WOLVES
Wolves in Decline (with graph), Ap19-6

YELLOWSTONE PARK
Wolves in Decline (with graph), Ap19-6