24 January 2011: Have something to say about an article you’ve read on Chemistry World this week? Leave your comments below…This week’s stories:

Electrons charge down DNA molecular wire
DNA can be used as a molecular wire to effectively conduct electricity over long distances without being damaged

Nanotubes protect brain tissue from stroke damage
Functionalised carbon nanotubes can protect brain from damage caused by stroke, research to investigate potential for repairing stroke-induced damage

US cost savings must spare science, Obama says
President proposes to freeze US domestic spending for five years, next budget will invest in research to spur innovation

Chips make short work of RNA synthesis
A simple lab on a chip synthesis of short strands of RNA has been developed

Eliminating arsenic from drinking water
Arsenic could be removed from water using a low cost, natural mineral found on the Earth’s surface

Firefighters need more protection from chemical fumes
Firefighters are exposing themselves to almost ten times the acceptable level of 75 volatile organic compounds while putting out vehicle fires

Muons take kinetic isotope effects to extremes
Scientists have used elementary particles to investigate the effect of isotope identity on one of the most fundamental reactions in chemistry

Germany heeds call to block lethal injection drug supply
German pharma industry agrees to block exports of drug used in lethal injections to the US, major producer ceases manufacture

Diet affects cholesterol drug
Metals in the body have been found to affect the performance of statin drugs

Carbon nanotubes for hydrogen storage
Researchers design 3D carbon-based nanotube matrix that can store and release hydrogen extremely efficiently

Luminescence gives 2D pH images
2D imaging of pH in vivo shows promise for wound monitoring in medicine

Channelling deeper to target breast cancer
An on chip model of breast ducts is used to demonstrate how to get further into the ducts than before to collect samples or deliver drugs

Patching up tooth enamel
Scientists have been able to rebuild eroded tooth enamel with a hydrogel

Dimer delivers pinpoint recognition
Synthetic molecule pairs up to provide a novel way to mimic selective binding seen in biological systems

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