A team of researchers at Rice University have created a lithium-ion battery that can be spray-painted on to any surface. The first surface they tested the 5-layer power-storing combo on was a set of bathroom tiles. Since then, flexible, glass, and steel surfaces — as well as a beer stein emblazoned with the Rice insignia — have been tested and used successfully to store small amounts of electricity. Graduate student and lead author of the team’s report Neelam Singh imagines buildings sheathed with battery-sprayed ceramic tiles that are then covered by solar cells, integrating energy gathering and storage functions on a structure’s exterior skin.
All the pieces are there, but now here comes the hard part. A scene familiar to many IKEA customers is now taking place on a large scale on top of the Houston IKEA store’s roof, where workers from contractor REC Solar are assembling flat-packed stacks of 3,962 solar panels into a 116,400-sq.-ft. PV array. The panels arrived on site at the end of last year, but construction won’t be complete until sometime this summer. When it’s done, the company says, the installation will generate enough energy to power 113 homes — or a larger number of in-store room displays. [Swamplot inbox; 
Houston’s 300,000-sq.-ft. IKEA store on the Katy Fwy. near Antoine — along with 8 other southern-state locations and a distribution center — will soon be covered with rooftop solar panels. The furniture company’s U.S. solar program began late last year. 
Once Houston starts drawing water from the Montgomery County reservoir to stabilize levels in Lake Houston — as it is expected to do, for the first time in 23 years, as early as this Tuesday — the water level on Lake Conroe will likely drop between 3 and 4 inches per week. That’s on top of the typical rate of evaporation from the lake during the hot summer months — also about 3 or 4 inches per week. On Friday, the San Jacinto River Authority reported 
