EDITORS

Walid El-Sharoud
E-mail: sharoud23@sciencereviews.co.uk

Terence J. Kemp
E-mail: t.j.kemp@sciencereviews.co.uk

Christopher J. Rhodes
E-mail: cjrhodes@fresh-lands.com

John W. Humberston
E-mail: j.humberston@ucl.ac.uk

EDITOR EMERITUS

D. Phillips CBE

Science Progress ISSN 0036-8504

 Volume 99 Number 4 2016


Science Progress commissions world authorities to contribute articles on the most interesting, important and meaningful topics - ranging from cosmology to the environment, and publishes occasional issues on specific topics.

351 Toxicological and analytical assessment of e-cigarette refill components on airway epithelia 
Jasjot Singh, Emilie Luquet, David P.T.Smith, Herman J.Potgieter, Patricia Ragazzon
 
399 Understanding and combating resistance to online learning 
John Vivolo
 
413 From Caá-ehé to a commercial sweetener – the diterpenoid glycosides of Stevia rebaudiana 
James R.Hanson
 
420 The interplay between DNA topology and accessory factors in site-specific recombination in bacteria and their bacteriophages
Charles J.Dorman, Marina M.Bogue
 
438 Current commentary: Plasmonic nanoparticles and solar cells 
Christopher J.Rhodes
 
450 Current commentary: Genetically modified algae produce hydrogen biofuel at five times their normal yield 
Christopher J.Rhodes
 
452 Current commentary: The 2016 Nobel Prize for Chemistry, awarded for: "The Design and Synthesis of Molecular Machines"
Christopher J.Rhodes
 
455 Current commentary: A new morphological trait in forensic identification – middle phalangeal hair (MPH) 
Kewal Krishan, Tanuj Kanchan
 
459 Conference report: 'New Life Sciences: The Road Ahead'. Report on the BioVisionAlexandria 2016 Conference 
Marwa Elwakil, Nathalie Roman, Marwa Abdel Rassoul, Israa Elfayoumi, Yousra Sobeih, Mohamed El-Faham