Solar and wind energy preserve groundwater for drought, agriculture

Solar and wind farms are popping up around the country to lower carbon emissions, and these renewables also have another important effect: keeping more water in the ground.

Method promises advances in 3D printing, manufacturing and biomedical applications

In a development offering great promise for additive manufacturing, Princeton University researchers have created a method to precisely create droplets using a jet of liquid. The technique allows manufacturers to quickly generate drops of material, finely control their size and locate them within a 3D space.

Why are big storms bringing so much more rain? Warming, yes, but also winds

For three hurricane seasons in a row, storms with record-breaking rainfall have caused catastrophic flooding in the southern United States. A new analysis by Princeton researchers explains why this trend is likely to continue with global warming: Both the higher moisture content of warmer air and storms’ increasing wind speeds conspire to produce wetter storms.

Shrinking grains expand understanding of self-healing materials

Cracks in the desert floor appear random to the untrained eye, even beautifully so, but those patterns of dried clay turn out to be predictable—and useful in designing advanced materials.

Investigating 'fourth state of matter' for renewable energy

A team from Princeton University and Ohio State University has been awarded a five-year, $3-million grant from the U.S. Department of Energy to advance research on low-temperature plasmas with the broader goal of improving energy efficiency and renewable energy technologies.

Graduate students help meet data centers' voracious appetite for power

A Princeton team's innovation in efficiency could mark a major shift for data centers, which face exponential growth over the coming decade.

Protecting smart machines from smart attacks

Machines' ability to learn by processing data gleaned from sensors underlies automated vehicles, medical devices and a host of other emerging technologies. But that learning ability leaves systems vulnerable to hackers in unexpected ways, researchers at Princeton University have found.

Avoiding dangers of AI in warfare requires responsible U.S. leadership among international community, general says

International agreements and coordinated diplomatic pressures will be essential in avoiding indiscriminate use of artificial intelligence in lethal military conflicts, retired Gen. John R. Allen told an audience at Princeton University on Wednesday, Oct. 2.

Engineering faculty take on 'Grand Challenges' in the environment

The Princeton Environmental Institute (PEI) gave awards to 13 projects, including five within the School of Engineering and Applied Science, as part of its Water and the Environment Grand Challenge program. Totaling $1.01 million, the newly awarded undertakings explore an array of topics in multiple disciplines, from wastewater emissions and the role of climate change in spreading plant diseases, to nitrogen-hungry bacteria and a plan to capture carbon dioxide while mitigating mining runoff. The projects run from 2019 to 2021.

The future of cities

Our choices about how we build and reshape urban areas over the coming decades will determine a lot about the long-term health of society and this planet.