With giant pectoral fins and colorful stripes, the lionfish is an imposing underwater predator. What's even more intimidating is how it hunts
The Nigiri Project aims to restore the beloved fish by cutting a notch in a California levee and letting some floodplains return to nature
Medical and recreational marijuana use is increasingly legal—but do consumers know what they're smoking?
A solar eclipse painted the cloudy U.K. skies and an explosion rocked a stellar corpse in our picks for this week's best space images
Daniel Beltra's aerial photographs reveal the human impact on nature
Even if only a small percentage of current farmland became wild meadows, it could bring populations back to previous levels
How hungry Mexican free-tails sabotage the competition
The doctors who announced the first successful procedure last week had a particularly difficult time finding willing organ donors
Using thermodynamic sensors, the iTBra could one day screen for breast cancer, but experts are wary
It's not just the flash and style, either—electric engines emit less heat than gas ones and could combat the urban heat island effect
The sun may power most of our world—but some things come alive only at night
A newly discovered crocodilian ancestor was a nine-foot-tall predator that stood on its hind legs
A burst of particles from the sun is hitting our atmosphere and lighting up the night as far south as Illinois
A digital library of reflectance spectra from microbes could be a powerful tool for spotting signs of extraterrestrials
When given a chance at direct persuasion, most politicians are surprisingly good at changing our minds
The three-leaf clover is what everyone wears, but what species is it?
An X-class explosion and a snowy satellite image feature among our picks for the week's best space images
More than just a famously never-ending number, pi has a knack for appearing in the mathematical formulas we use every day
As you celebrate the mathematical holiday, here's a history of notable moments in the irrational number's past
The origins of irrational fears
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