Consumers can easily go astray—especially if they are ordering naughty items or treating themselves for doing good deeds. And please, don’t trust them with portion sizes. At least that’s what the results of three studies done by Fuqua researchers examining consumer habits suggest.
Tiny spirals of DNA can encode more than just the color of your eyes or the shape of your nose. Using self-assembling DNA wires, Duke engineer Chris Dwyer is building optical computing chips so compact that you could cram 5,000 movies on a single CD-sized disc. The chromophores (red dots) absorb light and transform it into packets of energy called excitons. Then these excitons leap from chromophore to chromophore in a specific pattern.
This 3D scan of the fossilized hand of Australopithecus sediba, a human ancestor whose two-million-year-old remains were discovered in a South African cave, is one of nearly 9,000 fossil scans available for download at MorphoSource.org. Visitors to the site can zoom in or out and rotate the fossil scans, download them and even make their own physical copies to hold in their hands using 3-D printing.
Mongolia, a country of rugged, windswept expanses, is home to three million people and 50 million horses, camels, sheep and cattle. It is there that Greg Gray, professor of global health, infectious diseases and environmental sciences, has set up a remote research outpost that could detect the next global infectious disease pandemic.
The muscle cells of a zebrafish heart, called cardiomyocytes and colored red in this image, are able to re-grow after an injury, something cell biologist Ken Poss and cardiologist Ravi Karra would like to teach human heart cells to do. This image comes from 2015 paper in PNAS, in which their team identified a gene transcription factor that is key to the regeneration program activated in cardiomyocytes after an injury.
Rising seas threaten coastal marshes worldwide, like this marsh just outside Venice, Italy pictured in a satellite image. But a new study by Marco Marani of the Nicholas School finds marshes are more resilient than previously believed. Elevated levels of atmospheric CO2 boost plant biomass production, allowing marshes to trap more sediment and generate more organic soil.
Is falling apart inevitable as we get older? Not for tiny aquatic animals called hydra, says a team led by Duke University aging researcher James Vaupel. Unlike us, hydra continue to survive and reproduce well into old age, the researchers find. The results are part of an eight-year study of more than 2,000 individuals at the Max Planck Institute for Demographic Research.
Pundits have reminded us that “all politics is local” since American newspaper columnist Byron Price first used the phrase in 1932 to explain how hometown issues and economics shape national elections.
Old as the adage may be, it still holds true—especially, Megan Mullin’s research suggests, when it comes to the politics of climate change.
“The evidence for the effect of local weather on public opinion regarding climate change is overwhelming,” says Mullin, associate professor of environmental politics at the Nicholas School.