Life is a characteristic that distinguishes physical entities that have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased , or because they never had such functions and are classified as inanimate. Various forms of life exist, such as plants, animals, fungi, protists, archaea, and bacteria.
Life expectancy, often abbreviated to LEB , is a statistical measure of the average time an organism is expected to live, based on the year of its birth, its current age and other demographic factors including gender. The most commonly used measure of life expectancy is at birth, which can be defined in two ways.
Life extension is the idea of extending the human lifespan, either modestly – through improvements in medicine – or dramatically by increasing the maximum lifespan beyond its generally settled limit of 125 years. The ability to achieve such dramatic changes, however, does not currently exist.Some researchers in this area, and "life extensionists", "immortalists" or "longevists" , believe that future breakthroughs in tissue rejuvenation, stem cells, regenerative medicine, molecular repair, gene therapy, pharmaceuticals, and organ replacement (such as with artificial organs or xenotransplantations) will eventually enable humans to have indefinite lifespans (agerasia) through complete rejuvenation to a healthy youthful condition.
Life on Mars
The possibility of life on Mars is a subject of significant interest to astrobiology due to its proximity and similarities to Earth. To date, no proof has been found of past or present life on Mars.
Life of Pi
Life of Pi is a Canadian fantasy adventure novel by Yann Martel published in 2001. The protagonist is Piscine Molitor "Pi" Patel, an Indian Tamil boy from Pondicherry who explores issues of spirituality and practicality from an early age.
List of life pictures and life ideas
Explore life ideas, browse life photos and life pictures
Life insurance is a contract between an insurance policy holder and an insurer or assurer, where the insurer promises to pay a designated beneficiary a sum of money (the benefit) in exchange for a premium, upon the death of an insured person (often the policy holder). Depending on the contract, other events such as terminal illness or critical illness can also trigger payment.
Life on Mars (British TV series)
Life on Mars is a British television series broadcast on BBC One between 9 January 2006 and 10 April 2007. The series combines elements of speculative fiction and police procedural, featuring a present-day police officer from the Greater Manchester Police who wakes up in 1973 after being involved in a road accident.
Life of Pi (film)
Life of Pi is a 2012 survival drama film based on Yann Martel's 2001 novel of the same name. Directed by Ang Lee, the film's adapted screenplay was written by David Magee, and it stars Suraj Sharma, Irrfan Khan, Rafe Spall, Tabu, Adil Hussain, and Gérard Depardieu.
Life-cycle assessment is a technique to assess environmental impacts associated with all the stages of a product's life from raw material extraction through materials processing, manufacture, distribution, use, repair and maintenance, and disposal or recycling. Designers use this process to help critique their products.
Lifetime (TV network)
Lifetime is an American pay television channel that is part of Lifetime Entertainment Services, a subsidiary of A&E Networks, which is jointly owned by the Hearst Communications and The Walt Disney Company. It features programming that is geared toward women or features women in lead roles.