It was a rich week for science news. Researchers at Sweden’s Lund University have solved a 50-year-old mystery in hematology, explaining why people with the same blood type can have different levels of key molecules on their red blood cells. Published in Nature Communications, the discovery is expected to improve the safety of blood transfusions and reveal new immune defense mechanisms.
Meanwhile, a new study has reignited debate over Rongorongo, the undeciphered writing system of Easter Island’s Rapa Nui people. The script, first described in 1864, uses pictographic glyphs and remains one of the world’s great linguistic puzzles. Researchers are revisiting whether the Rapa Nui developed Rongorongo independently — a finding that, if confirmed, would place it among the very few instances of independent invention of writing in human history.
And from Chile’s Cerro Tololo Observatory, the 570-megapixel Dark Energy Camera has captured unprecedented detail of Messier 104 — the Sombrero Galaxy — located some 30 million light-years away. The image reveals a brilliant core, roughly 2,000 globular star clusters, and a dramatic dark band of cold dust and hydrogen gas.
On a more sobering note, a review of 177 studies warns that the combination of hormone-disrupting chemicals — commonly found in plastics and consumer products — and the effects of climate change may be accelerating fertility decline in both humans and animals. The researchers found that simultaneous exposure to endocrine disruptors and heat stress could have compounding or synergistic effects on reproductive health.
