The Arecibo Message Fifty Years Later
In November 1974, astronomers used the radio telescope at Puerto Rico's Arecibo Observatory to send a hello to the universe.
Surprising Discovery Challenges Key Principle of Modern Cosmology
Observations of an enormous cosmic structure, dubbed the "Big Ring," seem to violate the Copernican principle.
Five Things You Probably Have Wrong about the T. rex
How well do you really know Tyrannosaurus rex, the so-called Tyrant Lizard King?
NASA’s Deepest 3D Fly-through of the Universe
From the present day all the way to less than 400 million years after the Big Bang, we're seeing how the Universe grew up like never before.
Celebrate World Bear Day!
The joy and concern we feel on World Bear Day perfectly represents our complicated—and sometimes contradictory—feelings about these massive mammals.
Ghost Cats of the East
Why do people claim to see cougars in the eastern United States when the cats are now extremely rare in that part of North America?
Can We Protect Against Coronavirus by Rewriting Our Genomes?
Genome recoding could offer new modes of virus resistance, but the technology raises serious ethical concerns.
What’s Causing the Rise of Hoarding Disorder?
Now that the DSM lists severe hoarding as a disorder apart from OCD, psychologists are asking what explains its prevalence.