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Scientists studying bacteria have identified the roots of a behavior that is regulated by the circadian clock. The research provides a striking example of the importance of keeping the internal biological clock aligned with the external environment so that key processes occur at the right time of day.
(California Institute of Technology) Scientists uncover an unusual partnership at the bottom of the ocean.
(Rice University) Rice University and Georgia Tech scientists use data from ancient coral to build a record of temperatures in the tropical Pacific Ocean over the last millennium. The data question previous links between volcanic eruptions and El Niño events.
(University of California – Riverside) A team led by UC Riverside geologists has discovered the first ancestor on the family tree that contains most animals today, including humans. The wormlike creature, Ikaria wariootia, is the earliest bilaterian, or organism with a front and back, two symmetrical sides, and openings at either end connected by a gut. It was found in Ediacaran Period deposits in Australia and was 2-7 millimeters long, with the largest the size of a grain of rice.
Nearly a quarter of fish collected from a San Diego stream contain microplastics. The study, which examined plastics in coastal sediments and three species of fish, showed that the frequency and types of plastic ingested varied with fish species and, in some cases, size or age of fish.
(University of California – San Diego) A trio of studies are the latest developments in a paradigm shift that could change how Earth history is understood. They support an assertion by a Scripps Institution of Oceanography geophysicist that a once-liquid portion of the lower mantle, rather than the core, could have exceeded the thresholds needed to create Earth’s magnetic field during its early history.
(University of California – San Diego) UC San Diego nanoengineers offer a research roadmap describing four challenges that need to be addressed in order to advance a promising class of batteries, all-solid-state batteries, to commercialization. The researchers describe their work to tackle these challenges over the past three years.
In a new study, researchers took advantage of the natural oceanographic gradient in the Gulf of California to study the effects of variable oxygen levels and temperatures on demersal fish communities.
Most people know that good oral hygiene — brushing, flossing, and regular dental visits — is linked to good health. Microbiome researchers offer fresh evidence to support that conventional wisdom, by taking a close look at invisible communities of microbes that live in every mouth. Their study found a correlation between people who did not visit the dentist regularly and increased presence of a pathogen that causes periodontal disease.