Analysis of ancient DNA shows that a genetic variant that increases susceptibility to tuberculosis has drastically decreased in Europe since the Bronze Age Source: https://www.newscientist.com/article/2270136-people-of-european-descent-evolved-resistance-to-tb-over-10000-years/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Tag: age
Cephalopod Passes Cognitive Test Designed For Human Children
mi shares a report from ScienceAlert: The marshmallow test, or Stanford marshmallow experiment, is pretty straightforward. A child is placed in a room with a marshmallow. They are told, if they can manage not to eat the marshmallow for 15 minutes, they’ll get a second marshmallow, and be allowed to eat both. This ability to delay gratification demonstrates cognitive abilities such…
Decapitated Stone Age woman’s head rolled into a cave in Italy
After a woman died and was likely dismembered, her skull went on a “long and bumpy ride.” Source: https://www.livescience.com/rollaway-neolithic-skull.html
Asteroid dust in Chicxulub crater seals deal on dino extinction
Scientists examined rock cores taken from the Chicxulub crater in Mexico, site of the asteroid impact that triggered dinosaur extinction, and found iridium, a telltale sign of asteroids. Source: https://earthsky.org/earth/asteroid-dust-iridium-chicxulub-crater-dinosaur-extinction…
Gulf Stream at its weakest in over 1,000 years
A new study suggests that the Gulf Stream – an Atlantic Ocean current that plays a large role in shaping Earth’s weather patterns – is weaker now than at any point in the last 1,000 years. Source: https://earthsky.org/earth/gulf-stream-atlantic-weakest-in-over-1000-years…
World’s oldest DNA sheds light on mammoth evolution
A mammoth tooth uncovered from the Siberian permafrost yields the oldest DNA yet discovered and provides insight into the evolution of the giant beasts. Source: https://earthsky.org/earth/worlds-oldest-dna-mammoth-evolution-video…
What’s the coldest Earth has ever been?
Our planet’s history includes episodes of cold so extreme that glaciers reached sea level in equatorial regions. Source: https://earthsky.org/earth/whats-coldest-earth-has-ever-been…
Why does this galaxy look older than its years?
To the extent that we can see them, galaxies in the very early universe should look relatively young and unformed. But galaxy ALESS 073.1 is a surprise to astronomers: it looks more mature than we’d have any reason to expect. Why? Source: https://earthsky.org/space/galaxy-looks-older-than-its-years-aless-073-1…
3D map of a million binary stars
A new atlas of nearby binary stars plots more than a million pairs and reveals a profusion of identical twins. Source: https://earthsky.org/space/3d-map-million-binary-stars…
Celtic god or 1980s hockey player? Ancient deity statue wears a mullet and mustache
A tiny statue of a deity dating to the Iron Age has a surprisingly modern hairstyle. Source: https://www.livescience.com/celtic-deity-statue-mullet.html