A new filter that separates the two substances only using gravity could help clean oil spills. (p. 17)

To call it a fractious debate is an understatement. Hydraulic fracturing, or fracking, wrenches open rock deep beneath the Earth's surface, freeing the natural gas that's trapped inside. Proponents argue that fracking-related gas recovery is a game changer, a bridge to the renewable energy landscape of the future. The gas, primarily methane, is cheap and relatively clean. Because America is brimful of the stuff, harvesting the fuel via fracking could provide the country jobs and reduce its dependence on foreign sources of energy. But along with these promises have come alarming local inciden... (p. 20)

Exploiting a standard tool of art conservation can help police find painted-over bloodstains. (p. 9)

Hydrogel treatment stimulates cell repair and blood vessel regrowth in pig experiments.

Residents of two remote Peruvian communities appear to have survived infection by the deadly virus. (p. 12)

Major hubs with far-flung flights are most efficient at launching pandemics.

Constructed of silicone and heart cells, medusoid moves like the real thing. (p. 15)