It is difficult to make colloidal spheres self-assemble into photonic crystals, which are valued for their optical properties. A team of engineers and scientists report they have found a pathway toward the self-assembly of these elusive photonic crystal structures never assembled before on the sub-micrometer scale. 

Sen. Jeff Flake (R-Ariz.) has reintroduced legislation aimed at giving states and communities more time to implement 2015 ground-level ozone limits under National Ambient Air Quality Standards. The measure, S. 452, also would revise the US Environmental Protection Agency’s existing timeline for reviewing NAAQS and air-quality criteria from 5-year intervals to 10-year intervals.

Kerri L. Fox has been added as chief financial advisor to Steelhead LNG Corp. She previously was head of BBVA Securities Inc.’s project finance North America business.

Matt Marietta has joined Flotek Industries Inc. as senior vice-president of corporate development and investor relations effective Mar. 1.

A little-understood biological property that appears to allow cell components to store energy on their outer edges is the possible key to developing a new class of materials and devices to collect, store and manage energy for a variety of applications, a team of researchers has proposed.

Total SA has decided not to proceed with the Stage 2 farm-in into permits in the onshore southern Georgina basin of western Queensland held by Central Petroleum Ltd., Brisbane.

TransCanada Corp. has offered to sell a 49.3% interest in Iroquois Gas Transmission System LP, together with its remaining 11.8% interest in Portland Natural Gas Transmission System (PNGTS), to its master limited partnership, TC PipeLines LP (TCP).