Jellyfish could be much smarter than scientists previously thought, asserts a new study published in the journal Current Biology. Poisonous Caribbean box jellyfish can learn at a far more complex ...

Sea urchins look like an inanimate bundle of needles, but a closer look at these alien-like creatures reveals a surprisingly complex “all-body brain” that challenges our assumptions about nervous ...

In the past, many scientists believed that only mammals and birds could feel or think in complex ways. Reptiles, fish, and insects were seen as simple creatures that reacted purely on instinct. But ...

Add Yahoo as a preferred source to see more of our stories on Google. Any men tend to share a straightforwardness that can be surprisingly refreshing. This isn't about reducing anyone's complexity but ...

These creatures may not have hearts, but they have adapted regardless. Some extraordinary creatures exist without a heart and thrive in their own ways. Imagine life without a heart—it sounds ...