Metabolic engineering may rescue our energy future. A new strain of yeast that is more efficient at fermenting galactose might make red seaweed a viable future biofuel.

Producers of biofuels made from terrestrial biomass crops have had difficulty breaking down recalcitrant fibers and extracting fermentable sugars. The harsh pretreatment processes used to release the sugars also resulted in toxic byproducts, inhibiting subsequent microbial fermentation.

But perhaps marine biomass can be more easily degraded to fermentable sugars, leading to production rates and range of distribution higher than terrestrial biomass.

An asteroid the size of a Volvo exploded over Sudan's Nubian Desert in 2008 and initial research was focused on classifying the meteorite fragments soon after they were strewn across the desert and tracked by NASA's Near Earth Object astronomical network. Now in a series of 20 papers published in Meteoritics and Planetary Science and the diversity of these fragments introduces as many questions as it does answers.