“Locked” for 300 years: Virtual unfolding has now revealed this letter’s secrets

arstechnica.com – Practice of intricately folding letters to secure them is known as "letterlocking."

Source: Jana Dambrogio, et al. Unlocking history through automated virtual unfolding of sealed documents imaged by X-ray microtomography. Nature Communications, 2021.

Una partícula diminuta podría alterar las leyes de la física

nytimes.com – No es el próximo bosón de Higgs, todavía. Pero la mejor explicación, según los físicos, tiene que ver con formas de materia y energía no conocidas actualmente por la ciencia.

Source: Sz. Borsanyi, et al. Leading hadronic contribution to the muon magnetic moment from lattice QCD. Nature, 2021.

Our ancestors left Africa both with and without modern brains

arstechnica.com – The genus Homo originated with a brain that still had ape-like features.

Source: Marcia S. Ponce de León, et al. The primitive brain of early Homo. Science, 2021.

Our brain is hard-wired to make life more complicated rather than simple. Here’s a simple lifehack

zmescience.com – Scientists found that people are biased against subtractive solutions.

Source: Gabrielle S. Adams, Benjamin A. Converse, Andrew H. Hales, Leidy E. Klotz. People systematically overlook subtractive changes. Nature, 2021.

Why do gorillas beat their chest? New study shows they don’t ‘bluff’

zmescience.com – Male gorillas beat their chest to signal dominance to other males, but also their reproductive value to females.

Source: Edward Wright, et al. Chest beats as an honest signal of body size in male mountain gorillas (Gorilla beringei beringei). Scientific Reports, 2021.

'Tantalizing' results of 2 experiments defy physics rulebook

nbcnews.com – Preliminary results from two experiments suggest something could be wrong with the basic way physicists think the universe works.

Source: LHCb collaboration, et al. Test of lepton universality in beauty-quark decays. arXiv, 2021.

These viruses are the most likely to trigger the next pandemic, according to scientists

livescience.com – A new online tool ranks viruses by their potential to jump from animals to people and cause pandemics.

Source: Zoë L. Grange, et al. Ranking the risk of animal-to-human spillover for newly discovered viruses. Proceedings of the National Academy of Sciences, 2021.

Brain Organoids Grown in a Tiny 3D-Printed System

azom.com – Scientists from MIT and the Indian Institute of Technology Madras have grown small amounts of self-organizing brain tissue, known as organoids, in a tiny 3D-printed system that allows observation while they grow and develop.

Source: Ikram Khan, et al. A low-cost 3D printed microfluidic bioreactor and imaging chamber for live-organoid imaging. Biomicrofluidics, 2021.

Prior to the Chicxulub impact, rainforests looked very different

arstechnica.com – Plant fossils from Colombia show a turnover from conifers to today's forests.

Source: Mónica R. Carvalho, et al. Extinction at the end-Cretaceous and the origin of modern Neotropical rainforests. Science, 2021.

The Type of Material and Fabric Layer Amount in COVID-19 Masks Matter

azom.com – A new study by researchers from the Georgia Institute of Technology has found that wearing a face mask can safeguard a person and others from Covid-19, but the kind of material and how many fabric layers are utilized can considerably influence the risk of exposure.

Source: Taekyu Joo, et al. Evaluation of Particle Filtration Efficiency of Commercially Available Materials for Homemade Face Mask Usage. Aerosol Science and Technology, 2021.

Mysterious X-rays are flaring out of Uranus

livescience.com – Uranus is always full of surprises.

Source: W. R. Dunn, et al. A Low Signal Detection of X‐Rays From Uranus. Journal of Geophysical Research: Space Physics, 2021.