LiveScience Topic:
Evolution

Evolution is among the most substantiated concepts in science and is the unifying theory of biological science. Charles Darwin co-originated, with Alfred Russel Wallace, the theory of evolution by natural selection. His masterwork, the 1859 "Origin of Species," offered ample evidence for evolution having occurred, as well as the first strong explanation for its mechanism, natural selection. Modern evolutionary theory incorporates these concepts: species change over time; genetic mutations are responsible for the changes; individuals with beneficial genetic mutations will survive preferentially compared with their competitors, in a process known as natural selection; those successful individuals' more numerous offspring will spread the beneficial genetic constructs throughout the population; when enough genetic changes reproductively isolate a population, that population has become a new species. Here you'll find news and information on evolution and the battle with proponents of so-called creation science.

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Sloth movement
Sloths move like monkeys, but with energy-saving adaptations.
mole, twelve fingers, polydactyly, hand formation, finger, thumb, wrist bone, evolution, Iberian mole,
The twelve-fingered Iberian mole grows a special set of extra thumbs, used to improve their tunneling abilities, from a repurposed wristbone.
close-up of robber fly eyes
The predatory owner of these eyes lived half a billion years ago.
Still from the 2009 film 'X-Men Origins: Wolverine' starring Hugh Jackman (pictured). Credit: Twentieth Century Fox
We each possess 60 new mutations, any of which could make major changes in our appearance or behavior. The genetic mistakes are the driving force of evolution.
Richard Lenski oversees the count of micorganisms growing in a Petri dish used in a study of evolution.
Richard Lenski's two decade experiment on E. coli sheds new light on evolutionary processes.
four-leaf clover
Don't feel silly if you won't walk under a ladder or you carry a lucky charm.
Navy
War makes people willing to punish those who don't work well with others.
From his wandering eye to his real desire to mate for life, here are the top 10 things every woman should know about the male brain.
A pelican soars in flight.
Two completely independent animals have evolved the same body part independently.
Even though there is less oxygen at high altitudes, Tibetans are able to work hard and consume sufficient amounts.
Cynthia Beall studies how Tibetans survive the low oxygen of high altitudes
The Great Southern Brood of cicadas is emerging after 13 years. It's no mere coincidence that cicadas have life cycles that are prime numbers.
A treefrog (Osteocephalus heyeri) from the Amazonian rainforest.
Why some places have more species than others.
The remains of a Neanderthal infant shed light on their extinction.
marsupial skeletons
A treasure trove of ancient marsupial skeletons indicates they lived in large groups, unlike today's pouched animals.
Baby koala at the Currumbin Wildlife Sanctuary.
Even forensic detectives would have a hard time distinguishing between koala fingerprints and human ones.
Nutcracker man
The strong-jawed human relative was long throught to prefer nuts.
Scale Eating Pupfish
Certain pupfish evolved specialized jaws very rapidly.
Colorized scanning electron micrograph depicting Escherichia coli bacteria, which recent research shows can breed in gravity 400,000 times stronger than that of Earth. Most E. coli strains are harmless, but the one here is O157:H7, which can cause severe
Alien life may be able to exploit more-extreme environments than thought, because huge gravitational forces don't seem to pose microbes many problems.
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