Animals can feel joy. Here’s how scientists might study it
Research has long focused on understanding negative emotions like fear in animals. Now they’re trying to measure positive feelings like joy. It’s a challenge.
Research has long focused on understanding negative emotions like fear in animals. Now they’re trying to measure positive feelings like joy. It’s a challenge.
No light will ever reach Earth from beyond this distant horizon of space.
Weather data have helped estimate the density of flying insects in U.S. skies. That could help track climate change’s impact on insects.
Some branches of physics hint that our universe is just one of many in a vast “multiverse.”
Veronika the cow scratches hard-to-reach body parts using a brush. This feat is forcing scientists to rethink which animals can use tools.