As a Black woman born in West Virginia in 1922, she was a contemporary of the Hidden Figures mathematician Katherine Johnson, and like her peer, Collins contended with both racism and sexism, which impeded her efforts to participate equally in the sciences and in society.
Preserved in a dried-out layer of sand and silt, the team found a trackway consisting of 12 footprints (see image, above), evidently left by one individual walking in a straight line.
Likewise, Franklin’s political views were dynamic — he argued forcefully that the colonies should remain loyal to Britain before embracing the calls for independence.
Or the term can refer to changes that occur as some natural progression within the non-living world (such as computer chips evolving to smaller devices which operate at an ever faster speed).
The researchers programmed a computer to control the nine servomotors in Pigeonbot II to steer the craft using propellers on each wing, but also to automatically twist and fan the tail in response, to create the stability that would normally come from a vertical fin.
That is partly because it is hard to maintain low-calorie diets for a long period of time, though that probably plays a relatively small role, says Laura Catharina Hinte at the Federal Institute of Technology Zurich in Switzerland.
A man diagnosed with Oropouche fever this summer still had functional virus in his semen 16 days after his symptoms started, a different group of researchers report in the December Emerging Infectious Diseases.
Inhabitants living in the many houses surrounded by curved, amphitheater-like residential patios may have enjoyed their time in the nearby lagoon, the researchers speculate, or at the city’s ball court, if they were not at the pyramidal temples taking part in rituals.
Gharials were once numerous in between Pakistan and Myanmar, with an estimated 5,000 to 10,000 people in the wild in the 1940s. They are now critically threatened as an outcome of searching, environment and fishing loss, with around 650 mature people left. Restricted breeding, nest tracking and other preservation activities helped improve this number from...
“In the real world, we haven’t really gotten to this stage where we actually have to design and build missions, so that’s why we need these exercises,” says NASA’s Paul Chodas, who runs many of the role-plays.
Previous research showed that a different enzyme called PKS makes red aldehyde-based psittacofulvins, says Joseph Corbo, a biologist and neuropathologist at Washington University School of Medicine in St. Louis.
It uses a strong magnetic field to monitor blood flow in the brain as an individual is performing some task (from reading or viewing pictures to thinking about various spoken words).
Adding this algorithm to the advanced AI models typically used in autonomous vehicles could help driverless cars make faster and more accurate decisions on the road, even during those unexpected situations they weren’t trained to handle.
Examples of reflective objects include a mirror, a smooth metal can, a car window, a glass bottle, ice, snow or the watery surface of a lake.
terrestrial gamma-ray flash: A brief burst of gamma rays, a high-energy type of radiation, that can be produced in Earth’s atmosphere (usually due to thunderstorms).
The researchers achieved this level of granularity with Clio by combining large language models (LLMs) — multiple virtual neural networks that underpin artificial intelligence tools, systems and services — that have been trained to identify all manner of objects, with computer vision.
This transformation of ground photos into a bird’s-eye view allows researchers to track how penguin colonies change in location and population size over time – which could prove especially helpful in remote regions of the world where aerial drone or aircraft surveys are done infrequently.
