Latest Countdowns
6 animals where females reign supreme
From honeybees to elephants, here are six animals with female bosses.
20 of the best named animal species on Earth, from Boops boop to Agra vation
From cave-dwelling creatures to weird-looking animals this countdown covers animals with the wittiest names.
6 species that scientists got wrong
The definition of a species is surprisingly unsettled, and the classifications of some of the best-known animals have come under scrutiny.
12 old shoes found in archaeological excavations from around the world
Shoes can give us an interesting insight into what people used to wear. Here are a dozen of the most extraordinary finds from the archaeological record.
NASA's most wanted: The 5 most dangerous asteroids to Earth
What is the most dangerous asteroid, how probable is an impact, and how much destructive power would a collision with Earth have? Here are 5 big space rocks that NASA is watching closely.
32 sci-fi technology predictions that came true
From flying cars and railguns to smartphones and jetpacks — what was once sci-fi can now be found in the real world.
32 times artificial intelligence got it catastrophically wrong
From chatbots giving truly terrible medical advice to facial recognition software incorrectly flagging members of congress as criminals, here are some of the most catastrophic mistakes artificial intelligence has ever made.
5 space discoveries that scientists are struggling to explain
From "runaway" black holes shooting across the cosmos to secret planets in our own backyard, space is overrun with mysterious objects that scientists are clamoring to explain. Here are five of the strangest sights in the universe, as well as their possible origins.
8 strange objects that could be hiding in the outer solar system
The outer solar system is a vast and mysterious place that could be harboring hidden objects we know almost nothing about — from the elusive Planet Nine and baby black holes to interstellar visitors and "planet killer" asteroids.
