A series of rapid environmental changes in East Africa roughly 2 million years ago may be responsible for driving human evolution, according to researchers at Penn State and Rutgers University.
Earth Sciences
Dec 24, 2012
61
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Snakes and lizards have distinct body movement patterns. Lizards bend from side to side as they retract their legs to walk or run. Snakes, on the other hand, slither and undulate, like a wave that travels down the body. However, ...
Plants & Animals
Jul 15, 2022
0
446
From the slime coating slugs to the saliva in our mouths, many slippery bodily fluids contain mucus. So how did this marvel of biology evolve?
Evolution
Aug 26, 2022
0
171
As butterflies flit among flowers, they don't all view blossoms the same way. In a phenomenon called sexually dimorphic vision, females of some butterfly species perceive ultraviolet color while the males see light and dark. ...
Plants & Animals
Aug 10, 2023
0
502
Natural selection can be an agonizingly long process. Some organisms have a way of taking matters into their own hands, or—in the case of the ant species Cerapachys biroi—mandibles.
Plants & Animals
Feb 1, 2013
19
0
DNA in preserved museum specimens can allow scientists to explore the history of species and humanities impact on the ecosystem, but samples are typically preserved in formaldehyde which can damage DNA and make very difficult ...
Archaeology
Jan 31, 2020
0
109
(PhysOrg.com) -- A new analysis of extinct sea creatures suggests that the transition from egg-laying to live-born young opened up evolutionary pathways that allowed these ancient species to adapt to and thrive in open oceans.
Evolution
Sep 16, 2009
0
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Male fiddler crabs tread an evolutionary fine line between growing an enlarged claw better for signalling to females or one better for fighting finds research in BioMed Central's open access journal BMC Evolutionary Biology. ...
Plants & Animals
Jul 16, 2013
0
0
(Phys.org) —Comparisons between the stock market floor and a zoo are not far from the mark, according to a new study published today in the journal Proceedings of the National Academy of Sciences (PNAS).
Plants & Animals
Sep 10, 2013
0
0
The question of how the chemical composition of a protein—the amino acid sequence—determines its 3D structure has been one of the biggest challenges in biophysics for more than half a century. This knowledge about the ...
General Physics
Jul 14, 2022
0
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