When computer climate models run farther into the future, they underestimate likely warming by a factor of two. Therefore, they underestimate eventual sea level rise as well.

Vans loaded with dozens of packages driving short distances would be more energy-efficient than drones. And electric vans would be best.

Carbon capture and other negative-emission technologies will only seal our dependence on carbon, according to a paper published in the journal Science.

Since the 1970s, the ability of animals to recognize themselves in mirrors has been used as a baseline test of whether they possess a self-awareness not unlike our own. By that measure, just a handful of species do — but the test has its critics. Not every species relies on sight like we do. To wit: dogs, who consistently fail the mirror test, but when given a scent-based test seem quite self-aware.

Moving crops to more productive regions could still provide the same quantity of food, while also leaving more land available for conservation.

A bacteria in old mushroom-growing substrates can convert cellulose to biobutanol, a gasoline substitute. The discovery could lead to a simple, low-cost method to produce butanol from non-food plants and waste biomass.

Materials being developed for the next generation of electric car batteries could be toxic to important soil microorganisms

Researchers suspect toxic industrial contaminants, especially heavy metals like cadmium and lead, can contribute to the spread of antibiotic resistance