Search for clues may explain collapse of ancient city in Mexico

Feben Ruscitti, a senior majoring in anthropology and classical studies, and Serena Webster, a graduate student in anthropology, sift through dirt to recover any missed artifacts from the excavation site in Mexico, July 2022. Credit: Andrew Somerville/Iowa State University Built more than a thousand years before the Aztec arrived in central Mexico, Teotihuacan was once … Read more

Bats’ midnight snacks reveal clues for managing endangered species

Environmental DNA (2022). DOI: 10.1002/edn3.354″ width=”800″ height=”530″/> Sample collection sites in south-central Indiana, situated 50 km apart. The Indianapolis Airport Project (IAP) consists of riparian forest patches surrounded by agriculture, residential, and commercial development (~5400 ha sampling area). The Hardwood Ecosystem Experiment (HEE) is a contiguous forest with active timber management (~19,000 ha sampling area). … Read more

New clues to how plants retain healthy genomes, avoid mitochondrial disease

MSH1 repairs organelle DNA. The MSH1 protein slides along a DNA strand until it detects mutations. Then MSH1 cuts both strands of DNA. The DNA repair machinery in the cell uses homologous DNA (DNA of the same sequence) as a template to fix the mutation. B) MSH1 increases sorting of organelle DNA. A population of … Read more

How did Earth avoid a Mars-like fate? Ancient rocks hold clues

A depiction of Earth, first without an inner core; second, with an inner core beginning to grow, around 550 million years ago; third, with an outermost and innermost inner core, around 450 million years ago. University of Rochester researchers used paleomagnetism to determine these two key dates in the history of the inner core, which … Read more

Genome of tropical freshwater fish may reveal conservation clues

DePaul researchers will create a high-quality reference genome for two species of the endemic characid genus Rhoadsia and conduct resequencing of 20 additional specimens. Credit: Windsor Aguirre The genetic evolution of freshwater fish in Ecuador could unlock new insights for conservation ecologists. A new collaboration between biologists and computer scientists at DePaul seeks to sequence … Read more

Anti-aging clues lurk in lysosomes, the recycling centers of the cell

0.05), ***P < 0.001 by log-rank test, 60–120 worms per replicate. See Supplementary Tables 4 and 5 for full lifespan data. In c, error bars represent mean ± standard error of the mean (sem), n = 3 biologically independent samples, ****P < 0.0001 by two-tailed Student's t-test, ~2,000 worms per replicate. In e, error bars ... Read more

What’s it like to be on Venus or Pluto? We studied their sand dunes and found some clues.

This article was originally published at The Conversation. (opens in new tab) The contributed the article to Space.com’s Expert Voices: Op-Ed & Insights. Andrew Gunn (opens in new tab)Lecturer, Monash University What is it like to be on the surface of Mars or Venus? Or even further afield, such as on Pluto, or Saturn’s moon … Read more

What’s it like to be on Venus or Pluto? We studied their sand dunes and found some clues

Sand blown by wind into ripples within Victoria Crater at Meridiani Planum on Mars, as photographed by NASA’s Mars Reconnaissance Orbiter on October 3, 2006. Credit: NASA/JPL-Caltech/University of Arizona/Cornell/Ohio State University What is it like to be on the surface of Mars or Venus? Or even further afield, such as on Pluto, or Saturn’s moon … Read more

Studying wealth inequality in animals can reveal clues about how their societies evolved

Across animal societies, some individuals benefit more from group-living, whereas others are left out. Credit: Laura Smale Wealth inequality is a research topic typically reserved for humans. Now, research from the Max Planck Institute of Animal Behavior and the University of Nebraska-Lincoln suggests that studying wealth inequality in animals can help shed light on social … Read more

Newly discovered carbon may yield clues to ancient Mars — ScienceDaily

NASA’s Curiosity rover landed on Mars on Aug. 6, 2012, and since then has roamed Gale Crater taking samples and sending the results back home for researchers to interpret. Analysis of carbon isotopes in sediment samples taken from half a dozen exposed locations, including an exposed cliff, leave researchers with three plausible explanations for the … Read more