(PhysOrg.com) -- A new study shows the production of sperm is more biologically taxing than previously thought, and expending energy on it has significant health implications.
Plants & Animals
Jan 30, 2012
8
0
Masturbation is common across the animal kingdom but is especially prevalent among primates, including humans. Historically, this behavior was considered to be either pathological or a by-product of sexual arousal, and recorded ...
Plants & Animals
Jun 6, 2023
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1640
New research from the University of East Anglia shows that an evolutionary force known as 'sexual selection' can explain the persistence of sex as a dominant mechanism for reproducing offspring.
Evolution
May 18, 2015
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1600
The mystery of aging has fascinated people for millennia, with many willing to do anything to halt or reverse this process, because aging is typically associated with gradual deterioration of most body functions. While senescence ...
Evolution
Dec 11, 2023
11
278
Paleontologists said Thursday they had discovered a new giant carnivorous dinosaur species that had a massive head and tiny arms, just like Tyrannosaurus rex.
Paleontology & Fossils
Jul 10, 2022
1
52
A team of researchers affiliated with several institutions in China and one in the U.S. has successfully derived offspring from a single unfertilized mammalian egg—in a mouse. In their paper published in Proceedings of ...
Big bones from the extinct "thunder bird" or dromornithid, excavated in the northern reaches of the Flinders Ranges and near Alice Springs, have yielded new insights into their slow breeding patterns.
Evolution
Aug 23, 2022
0
839
Few topics arouse as much interest and controversy as sex. This is hardly surprising. The biological continuance of the species hinges on it—if human beings stopped having sex, there would soon be no more human beings. ...
Evolution
Oct 22, 2019
3
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Sexual reproduction is thought to be essential for mixing up genes and holding your own in the race for survival. A major embarrassment to this theory are microscopic animals called rotifers, one class of which has reproduced ...
Biotechnology
Apr 15, 2016
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1383
(Phys.org)—Sex or no sex? Using various species of the evening primrose (Oenothera) as his model, Jesse Hollister, a former University of Toronto post-doctoral fellow, and his colleagues have demonstrated strong support ...
Evolution
Jan 12, 2015
7
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