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We summarize the week's scientific breakthroughs every Thursday.
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ArchaeologyLasers reveal sites used as the Americas’ oldest known star calendars
By around 3,100 years ago, Mesoamerican ritual complexes tracked celestial cycles using a 260-day count, a huge lidar mapping project shows.
By Bruce Bower -
EarthIndigenous people may have created the Amazon’s ‘dark earth’ on purpose
Modern Amazonians make nutrient-rich soil from ash, food scraps and burns. The soil strongly resembles ancient dark soils found in the region.
By Freda Kreier -
Health & MedicineFungi that cause serious lung infections are now found throughout the U.S.
Doctors should be on the lookout for three types of fungi that, when inhaled, can lead to serious infections, researchers say.
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Science & SocietyMeet the first Black American to earn an evolutionary biology Ph.D.
In ‘A Voice in the Wilderness,’ Joseph L. Graves Jr. discusses his scientific journey, how he debates racists, and more.
By Susan Milius -
Health & MedicineBrain scans suggest the pandemic prematurely aged teens’ brains
A small study suggests that the COVID-19 pandemic may have aged teen brains beyond their years.
By Freda Kreier -
Health & MedicineThese 5 biomedical advances gave 2022 a sci-fi feel
Big steps in biology and medicine include pig to human organ transplants, synthetic embryos and a fully complete human genome.
By Meghan Rosen -
LifeHere are 5 record-breaking science discoveries from 2022
The earliest surgery, fastest supercomputer and biggest single-celled bacteria were some of this year’s top science superlatives.
By Erin Wayman -
Health & MedicineMedical racism didn’t begin or end with the syphilis study at Tuskegee
Racism that fueled the syphilis study still permeates the U.S. health care system, causing disparities in access to medical care and health measures.
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LifeThese science discoveries from 2022 could be game changers
Gophers that farm, the earliest known hominid, a strange hybrid monkey and the W boson's mass are among the findings awaiting more evidence.
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Health & Medicine2022 was the year long COVID couldn’t be ignored
Long covid’s heavy toll grew clearer as millions of people reported lingering symptoms, and scientists and doctors looked for treatments.
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Health & MedicineSome common medical terms may be more confusing than doctors think
Got ‘bugs in your urine’ or an ‘impressive’ X-ray? Doctors’ jargon can be confusing, especially terms with different everyday and medical meanings.
By Meghan Rosen -
Health & MedicineHow 4 major coronavirus tools impacted the pandemic in 2022
During the third year of the pandemic, young kids got vaccines, a new booster shot came along, the use of at-home tests soared and Paxlovid became widely available.