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Science News Highlights

Today's science roundup covers breakthroughs in human genetics, early cancer detection, and the catastrophic aftermath of the dinosaur-extinction event.

Mysterious Ghost Ancestors in Human DNA

Genomic analysis has revealed that modern humans inherited DNA from two mysterious extinct lineages, adding to our understanding of human evolution as a complex web of interbreeding between multiple archaic human groups.

Blood Cancer's Genetic Warning Signs May Appear Years Early

Studies reveal that genetic mutations linked to blood cancers can be detected long before patients show symptoms, offering a potential window for earlier diagnosis and intervention while distinguishing malignant changes from benign age-related blood alterations.

Dinosaur-Killing Asteroid May Have Caused Firestorms 17 Times Hotter Than Lethal Human Limits

New research indicates the asteroid that wiped out the dinosaurs 66 million years ago likely caused firestorms reaching temperatures 17 times hotter than the thermal limit lethal to humans, far exceeding previous estimates of the impact's destructive power.

Reports Emerge of In-Orbit Refueling of China's BeiDou Navigation Satellite

Reports have surfaced suggesting that China may have carried out in-orbit refueling of a BeiDou navigation satellite, potentially marking a significant advancement in satellite servicing technology. BeiDou is China's global navigation satellite system, comparable to the United States' GPS, Russia's GLONASS, and Europe's

New Analysis Challenges Decades-Old Breast Cancer Overdiagnosis Estimates

A new study is challenging long-standing concerns about the risks of breast cancer screening. Researchers conducted a systematic reanalysis of all eight major randomized mammography trials, carefully accounting for variables that earlier analyses may have overlooked—specifically differences in follow-up time, screening frequency, and whether participants continued screening after trials

Indoor Air Study Reveals Scented Cleaners Can Generate Lung-Penetrating Nanoparticles

A new study is raising questions about the hidden costs of that fresh, clean scent in your home. Researchers have discovered that scented cleaning products can react with ozone already present indoors to generate massive quantities of invisible nanoparticles that can penetrate deep into the lungs. The pollution forms rapidly,