Knowledge is Not Made For Understanding; It is Made For Cutting

Tackling HIV in MENA: Talk Is Not Enough–It Is Time for Bold Actions: A Response to Recent Commentaries

The extrafascicular phloem is made for fighting

1 Helmholtz Zentrum München, German Research Center for Environmental Health, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, Neuherberg, Germany 2 Helmholtz Zentrum München, German Research Center for Environmental Health, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, Neuherberg, Germany *...

Where mtDNA is made

eukocytes have a better chance of sticking to neighboring cells with the right ligands if they rotate on their way by, based on results from Dwir et al. (page 649). Flowing leukocytes are captured via L-selectin interactions with carbohydrate ligands on vessel walls and subsets of other leukocytes. L-selectin is an unusual adhesive molecule—shear stress improves its adherance to ligands, wherea...

Teen pregnancy is not a public health crisis in the United States. It is time we made it one.

su rely a con cept th at's tim e h as lon g passed, wh ereas a recog-n ition th at we as a society h ave a sh am efu l record in th e poverty, edu cation al failu re an d social exclu sion of teen age m oth ers is an im portan t step in doin g som eth in g to rectify th at situ ation. Un less of cou rse you care on ly for perin atal m ortality rates an d n ot abou t disru pted you n g lives. an...

How is it made? Global Positioning System (GPS)

Recently, after a family trip, a friend of mine decided to go back to use his old paper map in his travels and to put his GPS receiver to rest for ever. This came after a series of deceptions by this little device with the annoying automated voice and the 4" screen and the constantly lost signal, his words notmine. The latest of these deceptions was a trip from Ottawa to Niagara Falls which too...