A surprise fossil found in the Amazon rainforest connects to both ancient saltwater dolphins and contemporary freshwater kin. The largest river dolphin fossil has been found — thousands of miles from its nearest living relative, reports an international group of paleontologists in Science Advances....
The advent of stone-, bronze-, and iron-working were all turning points in human history. But what about the working of wood? Learn more about the material ages of archaeology — and whether wood is one of them.
Male frogs often mistake other species, objects, and even lifeless frogs for mates, a mix-up known as misdirected amplexus. Learn why this mating mistake could be millions of years old.
I’m okay with crows becoming the next dominant lifeform on earth.
As of Sept. 20, 2023, the extent of sea ice for the Arctic and Antarctic was more than 4 million square kilometers below the long-term average. That's more than half the land area of the contiguous United States....
The presence of wolves in Maine is hotly debated after they were extirpated from the Northeast due to centuries of bounties, habitat alteration and development. But with evidence of a possible wolf roaming the trails, researchers must turn to poop, or scat, to really understand if they’ve returned....
Data collected by the BepiColombo spacecraft traces the causes of the strange aurora, which course through the planet's weak magnetosphere.
Their genital anatomy, musculature and aggressiveness have made them a model for studying the phenomenon of female masculinization — and demonstrate that sometimes, it’s not easy to tell the difference between male and female
While master craftsmen, these painters sometimes had to go back and redo important work, such as when they adorned a dead pharaoh with the wrong jewelry.
The tiny animals, distant ancestors of ours, avoid aging by making new stem cells whenever they need them. Could we one day do the same?
The pronghorn has outlived one of its fiercest predators, the now-extinct American cheetah. But how?
The sea ice extent is nearly a million square miles below the long-term average for late June.
The Emerald Isle has far fewer earthquakes than neighboring Britain. Now scientists think they know why.
Pollution on Earth is one thing. But how do we avoid a “tragedy of the commons” in space?
Why were dinosaurs so big? Find out what led some of our favorite dinos to such great heights.
Both air and sea surface temperatures have hit new records in June — and with El Niño, it will likely get even warmer.
Neglected tropical diseases like Chagas and dengue fever impact more than 200 million people across the globe. Find out how experts are working to control, prevent and eradicate them.
For 8,000 years, mirrors have literally reflected the history of human development and contributed to our modern sense of self.
