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
Cancer cells are resourceful survivors with plenty of tricks for staying alive. Researchers have uncovered one of these stratagems, showing how cells lacking the tumor suppressor BRCA1 can resume one form of DNA repair, sparing ...
Cell & Microbiology
Jan 21, 2013
0
0
(Phys.org)—With the global population racing past seven billion, demographers and world leaders have been concerned with depletion of resources to support everyone. The future, though, may be less bleak than some have feared. ...
Environment
Dec 24, 2012
1
1
When it comes to sex, animals of all shapes and sizes tend behave in predictable ways. There may be a chemical reason for that. New research from Rockefeller University has shown that chemicals in the brain—neuropeptides ...
Plants & Animals
Oct 26, 2012
0
0
(Phys.org)—Bacteria may be simple creatures, but unlike "higher" organisms they have a neat evolutionary trick. When the going gets tough, they can simply pick up and incorporate a loose bit of genetic material from their ...
Cell & Microbiology
Aug 31, 2012
0
0
Just as users of Google Earth can zoom in from space to a view of their own backyard, researchers can now navigate biological tissues from a whole embryo down to its subcellular structures thanks to recent advances in electron ...
Cell & Microbiology
Aug 6, 2012
0
0
A study in The Journal of Cell Biology describes how a secreted enzyme helps egg cells avoid being fertilized by more than one sperm.
Cell & Microbiology
Apr 2, 2012
0
0
Alzheimer's disease is triggered by the inappropriate processing of amyloid precursor protein to generate excess amounts of short peptide fragments called A-beta. For many years, the neurodegeneration associated with Alzheimer's ...
Cell & Microbiology
Oct 24, 2011
0
1
Differences in the levels of two key metabolic enzymes may explain why some people are more susceptible to liver damage, according to a study in the October 17 issue of the Journal of Cell Biology.
Cell & Microbiology
Oct 17, 2011
0
0
Take a second look at your iced or steaming tea. Guided by scientific experts, three New York City high school students using tabletop DNA technologies found several herbal brews and a few brands of tea contain ingredients ...
Biotechnology
Jul 21, 2011
1
0
