EPA announces winners recognized for new green chemistry technologies

2015 Presidential Green Chemistry Challenge Awards

Excellent Catalysts for Recycling of Released CO2
Effective low-pressure catalyst for carbon dioxide reduction to methanol

The Silvery Life of Pi
Silver−π Interactions measured using molecular torsion balances

Tracking Phosphorus Sources
Isotopic signatures give clues to the sources of phosphorus contamination in water supplies

Not Safe for Storage
Ettringite immobilizes toxic and radioactive species in cement, but releases them again with a little heat

Giving Liposomes the Shock Treatment
Proteoliposomes break apart in water and re-form as giant unilamellar vesicles

Revealing Hidden Messages Using Strain – or Vodka
Patterns imprinted on photonic crystal films appear when the films are stretched or soaked

The Elusive Hydrangea Blue
Blue food colorings are notoriously unstable: researchers identify structural information of the hydrangea blue pigment
![Cobalt-Catalyzed [2+2] Cycloadditions](https://www.chemistryviews.org/wp-content/uploads/legacy/common/images/thumbnails/source/14ddd81befa.jpg)
Cobalt-Catalyzed [2+2] Cycloadditions
Redox-active ligands for selective cycloadditions of unactivated alkenes

What Makes Teeth Tough?
Crack resistance in human tooth dentin may come from mineral nanoparticles with residual strain