How many species on Earth? 8.7 million
Eight million, seven hundred thousand species (give or take 1.3 million).
Aug 23, 2011
4.4 / 5 (9)
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Aug 23, 2011
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In the early life of an embryo, a monster lurks
Research based at Princeton University has revealed that newly fertilized cells only narrowly avoid degenerating into fatal chaos. At the same time, scientists have discovered that embryos have acquired a mechanism to contain ...
Aug 22, 2011
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Rediscovery of disappeared species: Truly back from the brink?
How the modular structure of proteins permits evolution to move forward
Changes in a short protein domain can alter a whole signaling network involved in organ development– this is the key result of a comparative study of the development of the egg laying organ in two species of nematodes. ...
Jul 26, 2011
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Computer simulations aid understanding of bacterial resistance against commonly used antibiotics
A recent study into the interactions between aminoglycoside antibiotics and their target site in bacteria used computer simulations to elucidate this mechanism and thereby suggest drug modifications.
Jul 21, 2011
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Chance favors the concentration of wealth, study shows
Most of our society's wealth is invested in businesses or other ventures that may or may not pan out. Thus, chance plays a role in where the wealth of a society will end up.
Jul 21, 2011
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Evolution of the evolutionarily minded
A pitcher perfect relationship
(PhysOrg.com) -- It seems counterintuitive, but in rare cases carnivorous plants and herbivorous animals nourish each other in a mutually beneficial relationship.
Jul 05, 2011
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Variation in susceptibility to a virus is the key to understanding infection biology
A new study shows that differences in the vulnerability of animals to a virus are crucial to understanding patterns of infection, and that variation in susceptibility to two marginally different viruses increases the number ...
Jun 30, 2011
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Singapore scientists discover how to control fate of stem cells
Scientists from the Genome Institute of Singapore (GIS), an institute of the Agency for Science, Technology and Research (A*STAR), in collaboration with the Cancer Science Institute of Singapore (CSI), have discovered how ...
Jun 24, 2011
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Spotlight on dynamic operation of enzymes
Our world is unique in that living organisms can undergo complex chemical reactions quickly and precisely, and sequence them together. But how can proteins integral to life effectively hasten these reactions? ...
Jun 15, 2011
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New light shed on cell division
Genes control everything from eye color to disease susceptibility, and inheritance - the passing of the genes from generation to generation after they have been duplicated - depends on centromeres. Located in the little pinched ...
Jun 14, 2011
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Scientists gain insight on how plants bend toward light
(PhysOrg.com) -- A Purdue University-led study may change how scientists think about how some plants bend toward light.
Jun 09, 2011
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Robots show the evolution of altruism
Scientists in Switzerland have pieced together the puzzle on the evolution of unselfish behaviour. They simulated genetic evolution over hundreds of generations by using simple robots, providing evidence of ...
May 23, 2011
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Discovery of DNA silencing mechanism reveals how plants protect their genome
(PhysOrg.com) -- Researchers at the RIKEN Plant Science Center (PSC) have clarified a key epigenetic mechanism by which an enzyme in the model plant Arabidopsis protects cells from harmful DNA elements. Published ...
May 12, 2011
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