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SpaceAtom & Cosmos
Scientists calculate the right mix of dark matter to build a galaxy, plus Kleopatra’s twins and an electric Encaledus in this week’s news.
By Science News -
HumansSmelling a rat in a bag of chips
A forensic scientist shares tales from a very special victims unit.
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Health & MedicineHalf of adult males carry HPV
Human papillomavirus, a sexually transmitted pathogen that can cause cancer, shows up often in men and lingers for months, a study shows.
By Nathan Seppa -
EarthPCBs may impair fertility
A study of women undergoing in vitro fertilization finds reduced embryo implantation among women with higher levels of one type of the banned chemicals.