Month: August 2022
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NASA’s Perseverance Makes New Discoveries in Mars’ Jezero Crater – NASA Mars Exploration
The rover found that Jezero Crater’s floor is made up of volcanic rocks that have interacted with water. Scientists got a surprise when NASA’s Perseverance Mars rover began examining rocks on the floor of Jezero Crater in spring of 2021: Because the crater held a lake billions of years ago, they had expected to find…
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Twitter shows lower-to-middle income countries have higher unemployment post pandemic — ScienceDaily
Lower-to-middle-income countries still struggle with high unemployment rates after COVID-19 lockdowns and economic restrictions, unlike higher-income countries such as Canada, finds a new study led by York University with the University of Witwatersrand in Johannesburg. This is opposite from the 2008-2009 global economic crisis when higher-income countries suffered more from the recession than lower-income countries.…
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Astronomers have discovered an exoplanet that could be completely covered in water | HeritageDaily
An international team of researchers led by Charles Cadieux, a Ph.D. student at the Université de Montréal and member of the Institute for Research on Exoplanets (iREx), has announced the discovery of TOI-1452 b, an exoplanet orbiting one of two small stars in a binary system located in the Draco constellation about 100 light-years from…
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Ancient limb fossils spark debate over the earliest known hominid
In 2001, researchers unearthed a partial fossil leg bone and two forearm bones in the central African nation of Chad. Those fossils come from the earliest known hominid, which lived around 7 million years ago, and reveal that the creature walked upright both on the ground and in the trees, a new study proposes. But…
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50 years ago, genes eluded electron microscopes
Visualizing Genes: The Possible Dream – Science News, September 2, 1972 Molecular biologists can now visualize the larger structures of the cell, such as the nucleus and chromosomes, under the powerful electron microscope. But they have not been able to obtain images of genes (DNA) on the chromosomes. Nor have they been able to see RNA … or…
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Sustainability of the Nile since the construction of the Aswan Dam | HeritageDaily
For thousands of years, the people of North Eastern Africa have relied on the Nile River as their primary source of life sustaining water. One of the longest rivers in the world, the Nile flows for over 4100 miles from Lake Victoria to the Mediterranean Sea. Annual floods in a season the Ancient Egyptians called…
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Why Are Sea Urchins So Destructive to Kelp Forests?
From the coast of Southern Africa to Southern Alaska, sea urchins and kelp coexist peacefully — until they don’t. In recent decades, more and more kelp forests have been razed by the hungry urchins. In these places, “urchin barrens” have replaced once lush and diverse ecosystems. “At its worst, it’s urchins as far as the…
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Despite flexibility, gig work and insecure income prove harmful to U.S. workers, according to study — ScienceDaily
Insecure income associated with nontraditional employment known as “gig work” has a negative impact on the overall health and well-being of U.S. workers, according to a new article by researchers from UTHealth Houston. A pre-press version of the findings, which will be published in the September 2022 issue of the journal Social Science & Medicine,…
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La NASA invita a la prensa a la primera prueba de defensa planetaria
La misión Prueba de redireccionamiento del asteroide doble (DART, por sus siglas en inglés) de la NASA, la primera en el mundo que pone a prueba una tecnología para defender a la Tierra de posibles peligros de asteroides o cometas, impactará con su objetivo, un asteroide que no supone ninguna amenaza para la Tierra, a…
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Research into choice-making shows careful consumers use their items more — ScienceDaily
Marketing scientists devote much of their work to understanding people’s decision-making and how to influence it. There’s been less effort devoted to what happens after people make their pick — do they like what they got days, weeks, or months after they’ve chosen it? Do they even use it much? A new study takes aim…