The definition of life has long been a challenge for scientists and philosophers. This is partially because life is a process, not a substance. This is complicated by a lack of kn

The meaning of LIFE is the quality that distinguishes a vital and functional being from a dead body. How to use life in a sentence.

Jan 21, 2026 · Life-forms present on Earth today have evolved from ancient common ancestors through the generation of hereditary variation and natural selection.

Feb 27, 2026 · The transition from non-life to life was very likely aided by an asteroid hitting Earth, prebiotic chemistry, molecular self-replication, and the emergence of membranes.

LIFE definition: 1. the period between birth and death, or the experience or state of being alive: 2. for the whole…. Learn more.

Nov 30, 2021 · In the Phaedrus, Timeaus, and Republic, Plato divided life into three parts: vegetable life, animal life, and rational life. All living creatures possessed the first in the form of nutrition and …

We can define life in very different ways depending on the context and the focus we want to give to the definition. For example, we can define life as the period from birth to death or as the condition that …

Follow CNN’s science coverage of life on Earth, including animals, plants, geology and geophysics, microorganisms and more.

A difficult term to define, life can be considered the characteristic state of living organisms and individual cells, or that quality or property that distinguishes living organisms from dead organisms and …

All groups of living organisms share several key characteristics or functions: order, sensitivity or response to stimuli, reproduction, adaptation, growth and development, regulation, homeostasis, and …