Knowing your "why" isn't just nice—it's essential to living a happy, fulfilling life. Here, experts offer steps to finding your purpose in life. What is the purpose of life? There are as many answers ...

Asking a biologist to define 'life' is a bit like looking-up the word 'definition' in a dictionary — it's as if you're questioning their very existence. Biologists like myself don't agree on what life ...

People often feel that they can intuitively recognize whether something is alive, but nature is filled with entities that flout easy categorization as life or non-life — and the challenge may ...

China’s Tiangong space station is fully operational and home to advanced research, tight quarters, and a crew of taikonauts ...