Each year, a couple hundred billion dollars are wasted on scientific experiments that can't be reproduced. And if they can't be reproduced, it's almost as if they didn't happen. Scientist Moshe Pritsker has tried to figure out a way to reduce that failure rate.
The 195 nations that signed the Paris climate deal have pledged to keep the average global temperature from rising 2 degrees Celsius above pre-industrial levels. Here's one way to visualize how close we're already getting to those limits.
There is a little Neanderthal in all of us — 1 percent to 3 percent of modern human DNA is a relic of our older cousins. New research indicates that the two species may have lived side-by-side in Europe for up to 5000 years, suggesting we may have shared many other things, too.
Blue morphos butterflies, especially males, are known for stunning beauty. But blue morphos have other unique characteristics: Sometimes one butterfly will take on the characteristics of both males and females.