Science & Nature
What's the Heaviest Star Ever Found?
The heaviest star humanity has ever discovered contains the mass of about 230 Suns in a space only about 35 times its diameter.
Clouded Leopard
Inside the life of the clouded leopard, the secretive Asian cat with the longest canine teeth of any living feline, and a tail built for climbing.
Which Animals Have The Strongest Sense Of Smell?
Among the most interesting abilities developed by some animals is a superb sense of smell. These super sniffers can smell a meal from far away or sense danger.
What Is The Coldest Place In The Solar System?
What is the coldest place in the solar system? Not the farthest world from the Sun, but a permanently shadowed lunar crater. Explore why cold hides in shadow.
The World’s Largest Eagles
Determining which eagles are the biggest in the world requires an examination of mass, length, and wingspan.
Sea Krait
The highly venomous sea krait, found in tropical and subtropical coastal regions, is an evolutionary link to the past, living half in and half out of water.
What Animals Live In The Nile River?
The Nile crocodiles, known for their aggressive nature, are apex predators in the Nile River.
Which Planet Is The Most Tilted?
Uranus leans at 97.77 degrees, far more than any other planet. See why the seventh world spins on its side and what that does to its seasons.
The Most Common Birds in the World
Which species are the most common birds in the world? The house sparrow, rock pigeon, and European starling all number in the billions.
Saiga Antelope
The admittedly odd-looking saiga antelope's population fell by 95 percent after the fall of the Soviet Union, but is slowly recovering.
Why Is Space Black?
Learn why space appears black despite countless stars and how cosmic age and expansion combine with a lack of atmosphere to create darkness.
Which Animals Cannot Walk Backwards?
Neither Emus nor Kangaroos, which are both from Australia, can walk backwards. The Australian coat of arms features both of these animals as symbolism for moving forward.
White Tiger
White tigers exist due to a very rare genetic mutation found among Bengal tigers in India, but now exist only in captivity.
Does Space Ever Truly End?
See why the observable universe has a horizon and how space may be infinite or finite without ever reaching a physical edge.
Why JWST Keeps Finding Galaxies That Shouldn't Exist
The construction of the James Webb Space Telescope has led to continuous revelations about the universe, including findings of galaxies that shouldn't exist.
Goblin Shark
Discover the unique goblin shark, a deep-sea living fossil with a long snout, pink skin, ancient lineage, and lightning-fast jaws.
Black Bear
The American black bear outnumbers every other bear species combined. A look at its range, diet, denning, breeding, and recovery.
Cuban Crocodile
Though only about half the size of an adult saltwater crocodile, Cuban crocodiles boast a range of unique characteristics.
10 Iconic Animals That Live Only In Canada
Hidden on remote islands, Arctic tundra, and isolated lakes, these 10 animals evolved into forms found nowhere outside Canada.
Banded Krait
Banded Krait (Bungarus fasciatus) is the longest krait, an elapid endemic to Asia with potent neurotoxic venom and a diet made up mostly of other snakes.
What Would Happen if the Sun Disappeared?
What would happen if the Sun vanished? Explore how Earth’s orbit, temperatures, oceans, and surviving life would change in total darkness forever.
What Is A Cloud Forest?
How cloud forests drink from the clouds, and why Kilimanjaro, Monteverde, Yakushima and the Appalachians all depend on the mist.
The Driest States In The United States
The driest states in the US aren't all deserts. Some are famous for snow. Ranked by NOAA precipitation data, with the geography that keeps each one dry.
Gharial
Meet the gharial, the fish-eating crocodilian with a taffy-stretched snout. Fewer than 800 breeding adults survive in the rivers of India and Nepal.
Which Planet Has The Biggest Storm?
Discover why Jupiter's Great Red Spot is the largest storm in the solar system and what scientists have learned about this centuries-old atmospheric giant.
The Cities With the Lowest Annual Rainfall in the US
The Cities With the Lowest Annual Rainfall in the US are led by Yuma, Arizona, where barely three inches fall in a year, followed by Las Vegas and Phoenix.
Milk Snake
Milk snakes are relatively docile and not a threat to humans, but are often mistaken for copperheads, or even rattlesnakes.
Could Humans Live On Titan?
Though Titan has an atmosphere and surface relatively similar to Earth, its temperatures and rotation would make life on Titan difficult for humans.
What's Outside the Universe?
Most people are aware of the Big Bang, but rarely dive into the specifics of what's outside the universe. Is it even possible to know?
What Would Jupiter Look Like as a Star?
See how Jupiter might glow, change color, and alter the solar system if the giant planet gained enough mass to become a star.
What Happens Inside A Neutron State
A teaspoon of neutron star matter weighs about a billion tons, revealing why these collapsed stellar remnants are among the densest objects in the universe.
What's the Fastest Thing in the Universe?
Light sets the universe’s speed limit, but cosmic rays, pulsars, black hole jets, and Parker Solar Probe come astonishingly close.
Tiger Shark
A guide to the tiger shark: its size, worldwide range, wildly varied diet, teeth, reproduction, danger to humans, and conservation status.
What's the Biggest Thing in the Universe?
The Hercules-Corona Borealis Great Wall is the biggest known structure in the universe, defying our notions of what's possible.
Which Planet Is the Hottest?
With a daytime surface temperature of up to 867 degrees Fahrenheit, this planet gets so hot that it literally melts lead.
Malayan Tiger
The Malayan tiger is one of the world's rarest big cats, with fewer than 150 left in the rainforests of Peninsular Malaysia. Learn what threatens it.