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Animals
- All About Aardvarks – Lesson
- All About Aardvarks – Quiz
- Babirusa – What a Pig! – Lesson
- Babirusa – What a Pig! – Quiz
- The Chimpanzee – The Nearly Human Primate – Lesson
- The Chimpanzee – The Nearly Human Primate – Quiz
- The Donkey – The Intelligent Yet Stubborn Animal – Lesson
- The Donkey – The Intelligent Yet Stubborn Animal – Quiz
- Electric Eels – Shocking Details – Lesson
- Electric Eels – Shocking Details – Quiz
- Ferrets – Playful, Fun-Loving Animals – Lesson
- Ferrets – Playful, Fun-Loving Animals – Quiz
- Giraffe – The Tallest Living Land Animal – Lesson
- Giraffe – The Tallest Living Land Animal – Quiz
- The Hedgehog – Lesson
- The Hedgehog – Quiz
- Iguanas – The “Chickens of the Tree” – Lesson
- Iguanas – The “Chickens of the Tree” – Quiz
- Jaguar – The Largest Cat on the American Continent – Lesson
- Jaguar – The Largest Cat on the American Continent – Quiz
- Koala – Not Koala Bear – Lesson
- Koala – Not Koala Bear – Quiz
- Llamas – The Alpaca’s Kind and Charismatic Cousins – Lesson
- Llamas – The Alpaca’s Kind and Charismatic Cousins – Quiz
- Macaws – The Intelligent, Brightly Colored Birds – Lesson
- Macaws – The Intelligent, Brightly Colored Birds – Quiz
- The Odd-Looking Narwhal – Lesson
- The Odd-Looking Narwhal – Quiz
- Otters – Playful Mammals and Great Swimmers- Lesson
- Otters – Playful Mammals and Great Swimmers – Quiz
- Polar Bears – The Largest Bear of Them All – Lesson
- Polar Bears – The Largest Bear of Them All – Quiz
- Quails – The Nearly Flightless Birds – Lesson
- Quails – The Nearly Flightless Birds – Quiz
- Rattlesnakes – The Venomous Reptiles – Lesson
- Rattlesnakes – The Venomous Reptiles – Quiz
- Sloths – Slow Is the Name of Their Game – Lesson
- Sloths – Slow Is the Name of Their Game – Quiz
- Tasmanian Devils – Catch One in a Looney Tunes Cartoon – Lesson
- Tasmanian Devils – Catch One in a Looney Tunes Cartoon – Quiz
- Gobbling Up Turkey on Thanksgiving Day – Lesson
- Gobbling Up Turkey on Thanksgiving Day – Quiz
- Deer – One of the Most Successful Animal Breeds in the World – Lesson
- Deer – One of the Most Successful Animal Breeds in the World – Quiz
- Wolves – Apex Predators – Lesson
- Wolves – Apex Predators – Quiz
- Yellowthroat – A Curious Songbird on the Ground and in the Air – Lesson
- Yellowthroat – A Curious Songbird on the Ground and in the Air – Quiz
- Zebras – Strong, Resilient, and Social Animals – Lesson
- Zebras – Strong, Resilient, and Social Animals – Quiz
- Alpacas – Mountain Dwellers With a Social Nature – Lesson
- Alpacas – Mountain Dwellers With a Social Nature – Quiz
- Beagles – Big-Hearted Scent Hounds – Lesson
- Beagles – Big-Hearted Scent Hounds – Quiz
- Cows – One of the Most Populous Animals on the Planet – Lesson
- Cows – One of the Most Populous Animals on the Planet – Quiz
- The Highly Intelligent Dolphin – Lesson
- The Highly Intelligent Dolphin – Quiz
- Earth’s Largest Living Land Animal – The Elephant – Lesson
- Earth’s Largest Living Land Animal – The Elephant – Quiz
- Flamingos – The Pink Birds That Stand on One Leg – Lesson
- Flamingos – The Pink Birds That Stand on One Leg – Quiz
- Gorillas – One of the Closest Living Relatives to Humans – Lesson
- Gorillas – One of the Closest Living Relatives to Humans – Quiz
- Itsy-Bitsy Hummingbirds – Lesson
- Itsy-Bitsy Hummingbirds – Quiz
- Impalas – Africa’s Famous Safari Animals – Lesson
- Impalas – Africa’s Famous Safari Animals – Quiz
- The Gelatinous and Bell-Shaped Jellyfish – Lesson
- The Gelatinous and Bell-Shaped Jellyfish – Quiz
- Killer Whales – The Largest Members of the Dolphin Family – Lesson
- Killer Whales – The Largest Members of the Dolphin Family – Quiz
- Lions – The Proverbial ‘Kings of the Jungle’ – Lesson
- Lions – The Proverbial ‘Kings of the Jungle’ – Quiz
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Space and Astronomy
- Mars: Just the Beginning? – Lesson
- Mars: Just the Beginning? – Quiz
- Six Billion ‘Earth-like’ Planets in the Milky Way Galaxy? – Lesson
- Six Billion ‘Earth-like’ Planets in the Milky Way Galaxy? – Quiz
- Did NASA Scientists Find Another Universe? – Lesson
- Did NASA Scientists Find Another Universe? – Quiz
- A New Planet Was Discovered – And Old Theories Must Change – Lesson
- A New Planet Was Discovered – And Old Theories Must Change – Quiz
- SpaceX Completes First Civilian Trip to Space – Lesson
- SpaceX Completes First Civilian Trip to Space – Quiz
- First Movie Filmed in Space Successful – Lesson
- First Movie Filmed in Space Successful – Quiz
- James Webb Telescope Heads to Deep Space – Lesson
- James Webb Telescope Heads to Deep Space – Quiz
- A Lot Is Happening on and Around the Moon – Lesson
- A Lot Is Happening on and Around the Moon – Quiz
- First-Ever Picture Taken of the Milky Way’s Black Hole – Lesson
- First-Ever Picture Taken of the Milky Way’s Black Hole – Quiz
- First James Webb Telescope Images Revealed – Lesson
- First James Webb Telescope Images Revealed – Quiz
- Buzz Aldrin Sells Jacket from the Moon Landing – Lesson
- Buzz Aldrin Sells Jacket from the Moon Landing – Quiz
- Humans at Home on the Moon – Could It Really Happen in This Decade? – Lesson
- Humans at Home on the Moon – Could It Really Happen in This Decade? – Quiz
- Winter on Mars – Lesson
- Winter on Mars – Quiz
- Pictures of Mars Show Hidden Figures – Lesson
- Pictures of Mars Show Hidden Figures – Quiz
- Jupiter and Venus Appear to ‘Kiss’ – Lesson
- Jupiter and Venus Appear to ‘Kiss’ – Quiz
- The James Webb Telescope Finds Six Ancient Galaxies – Lesson
- The James Webb Telescope Finds Six Ancient Galaxies – Quiz
- Would an EpiPen Work in Space? – Lesson
- Would an EpiPen Work in Space? – Quiz
- Satellite Spots Earth’s Second Moon? – Lesson
- Satellite Spots Earth’s Second Moon? – Quiz
- Space Mining – The Race is On and China is Leading – Lesson
- Space Mining – The Race is On and China is Leading – Quiz
- How Did Gold and Platinum Arrive on Earth – Lesson
- How Did Gold and Platinum Arrive on Earth – Quiz
- Odysseus Has Found Its New Home – Lesson
- Odysseus Has Found Its New Home – Quiz
- Earth – There’s No Place Like Home – Lesson
- Earth – There’s No Place Like Home – Quiz
- Mars – The Red Planet – Lesson
- Mars – The Red Planet – Quiz
- Of Eras and Ages: Life Begins in the Archean Eon – Lesson
- Of Eras and Ages: Life Begins in the Archean Eon – Quiz
- Venus – A Year in a Day – Lesson
- Venus – A Year in a Day- Quiz
- Mercury – The Speeding Messenger – Lesson
- Mercury – The Speeding Messenger – Quiz
- Of Eras and Ages: Ice, Oxygen, and Animals in the Proterozoic Eon – Lesson
- Of Eras and Ages: Ice, Oxygen, and Animals in the Proterozoic Eon – Quiz
- Jupiter – The Stormy Giant – Lesson
- Jupiter – The Stormy Giant – Quiz
- Saturn – The Great Timekeeper – Lesson
- Saturn – The Great Timekeeper – Quiz
- Of Eras and Ages: Life as We Know It in the Phanerozoic Eon – Lesson
- Of Eras and Ages: Life as We Know It in the Phanerozoic Eon – Quiz
- Uranus – The Sideways Planet – Lesson
- Uranus – The Sideways Planet – Quiz
- Neptune – Ice, Wind, and Mystery – Lesson
- Neptune – Ice, Wind, and Mystery – Quiz
- Pluto – The Forgotten Planet? – Lesson
- Pluto – The Forgotten Planet? – Quiz
- Astrology and Astronomy – From Omens to Orbits – Lesson
- Astrology and Astronomy – From Omens to Orbits – Quiz
- Men and Women on the Moon – From Apollo to Artemis and Beyond – Lesson
- Men and Women on the Moon – From Apollo to Artemis and Beyond – Quiz
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The Environment
- Red Tide: No Fun in the Florida Sun – Lesson
- Red Tide: No Fun in the Florida Sun – Quiz
- Leaded Gas Eradicated from the World, Says United Nations – Lesson
- Leaded Gas Eradicated from the World, Says United Nations – Quiz
- COVID Plastic Waste: A Big Problem for Oceans – Lesson
- COVID Plastic Waste: A Big Problem for Oceans – Quiz
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Archaeology and Paleontology
- Ancient Human Species Discovered – Lesson
- Ancient Human Species Discovered – Quiz
- Biblical City of Sodom Found in the Jordan Valley? – Lesson
- Biblical City of Sodom Found in the Jordan Valley? – Quiz
- Antarctic Explorer’s Ship Found After a Century – Lesson
- Antarctic Explorer’s Ship Found After a Century – Quiz
- Newly Found Diary Shows How Ancient Egyptians Built the Pyramids – Lesson
- Newly Found Diary Shows How Ancient Egyptians Built the Pyramids – Quiz
- Study Shows ‘Apocalyptic Dust’ Might Have Killed the Dinosaurs – Lesson
- Study Shows ‘Apocalyptic Dust’ Might Have Killed the Dinosaurs – Quiz
- Ancient Celestial Calendar Found in a 2,000-Year-Old Tomb – Lesson
- Ancient Celestial Calendar Found in a 2,000-Year-Old Tomb – Quiz
- Hiker Stumbles Upon Ancient Fossils While Hiking in Italy – Lesson
- Hiker Stumbles Upon Ancient Fossils While Hiking in Italy – Quiz
- Of Eras and Ages: Understanding Earth’s Geologic Time Scale – Lesson
- Of Eras and Ages: Understanding Earth’s Geologic Time Scale – Quiz
- Of Eras and Ages: Earth’s Chaotic Beginning in the Hadean Eon – Lesson
- Of Eras and Ages: Earth’s Chaotic Beginning in the Hadean Eon – Quiz
- Archaeology – The Art and Science of Uncovering Hidden History – Lesson
- Archaeology – The Art and Science of Uncovering Hidden History – Quiz
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Technology
- 3 Reasons to Protect Your Online Privacy – Lesson – VIDEO
- The Rise of Deepfakes – Lesson
- The Rise of Deepfakes – Quiz
- A New Mayflower Voyage, Captained by AI Technology – Lesson
- A New Mayflower Voyage, Captained by AI Technology – Quiz
- The Latest Supercomputer Is Breaking Speed Barriers – Lesson
- The Latest Supercomputer Is Breaking Speed Barriers – Quiz
- LNGenZ Survey: What is the Greatest American Invention? – Lesson
- LNGenZ Survey: What is the Greatest American Invention? – Quiz
- School and ChatGPT – Is it Cheating? – Lesson
- School and ChatGPT – Is it Cheating? – Quiz
- Artificial Intelligence Gets an Upgrade? – Lesson
- Artificial Intelligence Gets an Upgrade? – Quiz
- Scientists Plan to Bring the Dodo Bird Back from Extinction – Lesson
- Scientists Plan to Bring the Dodo Bird Back from Extinction – Quiz
- Is There Too Much Technology in Education? – Lesson
- Is There Too Much Technology in Education? – Quiz
- AI Coming to a Keyboard Near You – Lesson
- AI Coming to a Keyboard Near You – Quiz
- Is the NSA Browsing Your Browser History? – Lesson
- Is the NSA Browsing Your Browser History? – Quiz
- AI Can’t Compete With People Skills – Lesson
- AI Can’t Compete With People Skills – Quiz
- How Social Media Is Hazardous to Generation Z – and Beyond – Lesson
- How Social Media Is Hazardous to Generation Z – and Beyond – Quiz
- Surgeon General’s Warning for Social Media – Lesson
- Surgeon General’s Warning for Social Media – Quiz
- Pay With Your Face: Is the End of Cash Nigh? – Lesson
- Pay With Your Face: Is the End of Cash Nigh? – Quiz
- Can Artificial Intelligence Really End Cancer? – Lesson
- Can Artificial Intelligence Really End Cancer? – Quiz
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Mind and Body
- Teen Scientist’s Invention Mixes Music with Mental Health – Lesson
- Teen Scientist’s Invention Mixes Music with Mental Health – Quiz
- Man Receives First Pig Heart Transplant – Lesson
- Man Receives First Pig Heart Transplant – Quiz
- Sniffing Out the Truth About Smells – Lesson
- Sniffing Out the Truth About Smells – Quiz
- The Power of Playtime – Lesson
- The Power of Playtime – Quiz
- Is Language Getting More Emotional? – Lesson
- Is Language Getting More Emotional? – Quiz
- Scientists Say Household Chores Help Kids’ Brains – Lesson
- Scientists Say Household Chores Help Kids’ Brains – Quiz
- Transplant of Pig Kidney Into a Human Successful So Far – Lesson
- Transplant of Pig Kidney Into a Human Successful So Far – Quiz
- The Lack of a College Degree Is Shortening Lifespans – Lesson
- The Lack of a College Degree Is Shortening Lifespans – Quiz
- The ‘Mozart Effect’ – Classical Music Is Good for Your Brain – Lesson
- The ‘Mozart Effect’ – Classical Music Is Good for Your Brain – Quiz
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Flora and Fauna
- Dogs Can Tell When Humans Make a Mistake, Says Study – Lesson
- Dogs Can Tell When Humans Make a Mistake, Says Study – Quiz
- Jonathan: The World’s Oldest Living Tortoise – Lesson
- Jonathan: The World’s Oldest Living Tortoise – Quiz
- The Monarch Butterfly Makes a Surprise Return – Lesson
- The Monarch Butterfly Makes a Surprise Return – Quiz
- Bat Falcon Spotted in the United States for the First Time – Lesson
- Bat Falcon Spotted in United States for the First Time – Quiz
- Charles Darwin’s Notebooks Mysteriously Returned after 20 Years – Lesson
- Charles Darwin’s Notebooks Mysteriously Returned after 20 Years – Quiz
- Six Endangered Red Wolf Pups Born in Wildlife Refuge – Lesson
- Six Endangered Red Wolf Pups Born in Wildlife Refuge – Quiz
- Scientists Record Never-Before-Heard Whale Call – Lesson
- Scientists Record Never-Before Heard Whale Call – Quiz
- Underwater Meadow Gets Credit as the World’s Largest Living Plant – Lesson
- Underwater Meadow Gets Credit as the World’s Largest Living Plant – Quiz
- Scientists Trying to Bring the Tasmanian Tiger Back from Extinction – Lesson
- Scientists Trying to Bring the Tasmanian Tiger Back from Extinction – Quiz
- Jurassic Era Insect Found at Arizona Walmart – Lesson
- Jurassic Era Insect Found at Arizona Walmart – Quiz
- The Comeback of the Nearly Extinct Earless Lizard – Lesson
- The Comeback of the Nearly Extinct Earless Lizard – Quiz
- A Strange Golden Orb Found on the Ocean Floor Is Alive! – Lesson
- A Strange Golden Orb Found on the Ocean Floor Is Alive! – Quiz
- Peanut: The Pet Chicken With a World Record – Lesson
- Peanut: The Pet Chicken With a World Record – Quiz
- The Peculiar Venus Flytrap – Lesson
- The Peculiar Venus Flytrap – Quiz
- The Evolution of Plants – Lesson
- The Evolution of Plants – Quiz
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Mathematics
- Metric vs. Imperial: A Weighty Debate in Britain – Lesson
- Metric vs. Imperial: A Weighty Debate in Britain – Quiz
- The Abacus is Helping Kids Master Math Skills – Lesson
- The Abacus is Helping Kids Master Math Skills – Quiz
- Retired Engineer Discovers ‘Einstein’ Shape – Lesson
- Retired Engineer Discovers ‘Einstein’ Shape – Quiz
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Chemistry
Impalas – Africa’s Famous Safari Animals – Lesson
These ungulates are known for their speed and grace.
Known for their speed and grace, impalas were the inspiration for a line of vehicles made by Chevrolet, aptly named the Chevrolet Impala. They live across eastern and southern Africa and contribute to tourism, food, and sport hunting in the area. They are the continent’s most popular safari animals. Extremely quick and agile, they are known for their ability to escape dangerous situations. With a top running speed of about 37 mph, it is no wonder they are difficult prey to take down.
Africa’s Graceful Impalas
Impalas are easy to recognize due to their reddish-brown coat with contrasting black marks, remarkable leaping ability, and twisted ribbed horns. Living in a variety of habitats, including woodlands, savannas, and floodplains of eastern and southern Africa, they are a common sight, gathering in places that are near a water source and offer an abundance of food. They are primarily grazers but will make do with whatever is available. They have been known to feed on leaves, shoots, fruits, and flowers, though they eat only the most nutritious part of the plant. Much of their water intake comes from the food they eat, though they will still drink from streams, rivers, lakes, and water holes when available.
Impalas are medium-sized ungulates, with females being slightly smaller than males, which stand approximately 2 feet 9 inches and weigh around 142 pounds. Females stand around 2 feet 7 inches and weigh about 100 pounds. The animals have bushy white tails that feature a black strip running down the middle. Unlike females, males have horns that protrude from their heads and vary in size, depending on the species. Horns protect their heads and are useful tools when fighting other animals. An impala’s short fur emphasizes the sleek nature of the animal and its ability to run, leap, and change directions quickly.
Pronking, or stiff-legged bounding, is a common behavior in this mammal. Impalas are common prey for lions, leopards, cheetahs, wild dogs, crocodiles, and hyenas. Their agility allows them to escape any of these carnivorous predators, with their ability to run at speeds up to 37 mph and to jump as high as 9 feet in the air and up to an incredible 32 feet in distance. For those that avoid a predatory attack, a lifespan of 13 years in the wild is expected. Those in captivity can live as long as 17 years.
Reproduction and Social Behavior
Impalas live in one of three social groups, herds made up of territorial males, and of bachelor impalas, and of females. Territorial males protect a certain area by marking the boundaries with their urine and feces to ward off visitors. They build harems, or groups of females and their young, within the marked territory. Bachelor herds are smaller, with only around 30 members. The males do not graze or stay too close to one another until they choose to spar. Female herds vary in size and live in a designated area that covers between 200 and 440 acres. Females do not typically maintain a close relationship with their young. Once weaned, the baby impalas venture off to find another herd.
Impala breeding season (also called rut) happens once a year, typically beginning in May and lasting around three weeks. A male will put on a show for a female by flicking his tongue and vigorously nodding. Once she is impregnated, the female will have a gestation period between six and seven months. She will give birth to one calf and immediately hide the baby to keep it safe for the first few weeks. The mother will then allow the calf into the herd with the other females. After about four to six months, a male will be forced out of the group, while a female may be permitted to stick around.
Impala populations are classified as least concern, meaning there is little fear of this animal becoming extinct any time soon. However, the black-faced impala species is of more concern, as there are only approximately 1,000 remaining in the wild.
Impalas are remarkable African antelopes known for their speed, agility, and graceful movements. They thrive in woodlands, savannas, and floodplains, where their keen senses and powerful leaps help them avoid predators. Living in distinct social groups and following seasonal breeding patterns, impalas play an important role in their ecosystems.

- Impalas are fast, agile antelopes with strong jumping abilities that help them escape predators.
- Impalas live in woodlands, savannas, and floodplains across eastern and southern Africa, usually near water and food sources.
- Impalas live in distinct social groups and breed seasonally.