Created by Robotiz3d and the University of Liverpool, this autonomous road maintenance robot is stepping out of the lab for its debut journey.
For humans, the chance of giving birth to multiples is less than 2%. The situation is different with stars, especially with particularly heavy stars. Astronomers observe stars that are many times heavier than the sun in more than 80% of cases in double or multiple systems. The key question is whether they were also born as multiples, or whether stars are born alone and approach each other over time.
Multiple births have long been the norm for massive stars. At least on the computer, because in theoretical simulations huge clouds of gas and dust tend to collapse and form multiple systems of massive stars. These simulations depict a hierarchical process in which larger cloud portions contract to form denser cores, and where smaller regions within those “parent cores” collapse to form the separate stars: massive stars, but also numerous less massive stars.
And astronomers do indeed find a wealth of fully formed multiple star systems, especially stars that weigh many times more than the sun. However, this does not yet prove that multiple systems with massive stars are already forming in the primordial cloud, as predicted by simulations.
Researchers at the Leibniz Institute for Immunotherapy (LIT) have demonstrated that killer T cells of the immune system not only eliminate pathologically altered cells, but also promote the subsequent tissue wound healing process.
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NASA scans of Mars’ Jezero Crater confirm lake sediment layers that could contain evidence of ancient microbial life on the red planet.
The Centers for Disease Control and Prevention (CDC) is warning clinicians to remain on alert for measles cases due to a growing number of infections.
Between Dec. 1, 2023, and Jan. 23, 2024, there have been 23 confirmed cases of measles including seven cases from international travelers and two outbreaks with five or more infections each, according to an email sent this week.
Cases have been reported in Pennsylvania, New Jersey, Delaware and the Washington, D.C. area so far.
“You need to go back hundreds of million years to understand the full picture of life,” he said. “Fossils are the database for deep-time studies.”
Paleontology may be a look back into the deep past, but it also plays a role in our future.
“Paleontology, and dinosaurs in particular, is a fantastic gateway into science, because all kids are interested in dinosaurs,” Storrs said. “It’s great if they go on to become scientists, but at the very least, they can be part of an informed citizenry that has a basic knowledge of the world and how science operates, because there’s always going to be questions about vaccines for example, or evolution, or climate change. Science plays a huge role in our world today.”
Alternative sources of rubber from plants are being studied as a more sustainable substitute to natural rubber.
