PUZZLE PLANT After bursting on the scene in the 1960s, marijuana remains a substance with uncertain effects on mental health and medical conditions.
SEASTOCK/iStockphoto
-
Magazine
In the Sept. 30 SN: Smog's health woes, secrets of the bat brain, slug slime inspires surgical glue, wild beer, Neandertal tar recipes, the sun's recent flare-ups and more.
Humans & Society
Topic Image Rail
EMBRYO, INTERRUPTED A 5-day-old human embryo is usually composed of about 200 cells in a hollow ball configuration called a blastocyst (left). Embryos edited to remove the OCT4 gene (right) fail to make normal blastocysts.
K. Niakan/Nature 2017
MICROBE BREWS Scientists are looking for a few good yeasts to enhance beer brewing. Each flask (above) contains the same liquid ingredients and a different kind of yeast.
M. Bochman
Humans & Society
-
Ancestry
News
Pacific islanders got a double whammy of Stone Age DNA
Neandertal and Denisovan genes influence the health of present-day Melanesians.News
Human DNA found in a Neandertal woman
Interbreeding between humans and Neandertals happened earlier than thought, leaving traces in the Neandertal genome. -
Anthropology
News
Skeleton ignites debate over whether women were Viking warriors
Scientists spar over a 10th century woman who may have had serious fight in her.Science TickerSpiritual convictions and group identities inspire terrorist acts, study finds
Sacred values and becoming one with comrades fuels terrorist acts, a report finds. -
Archaeology
Science TickerPeople may have lived in Brazil more than 20,000 years ago
Stone Age humans left behind clues of their presence at a remote Brazilian rock shelter.News in Brief
People may have lived in Brazil more than 20,000 years ago
Stone Age humans left behind clues of their presence at a remote Brazilian rock shelter. -
Psychology
50 Years Ago
Confusion lingers over health-related pros and cons of marijuana
50 years ago, the effects of chronic marijuana smoking on mental health were hazy. They still are.News
Science can’t forecast love
Scientists’ forecast for romantic matches is unpredictable. -
Science & Society
-
Networks
Letters to the EditorReaders respond to terrorism's roots
Readers respond to the July 9, 2016, issue of Science News with questions on terrorism, dog evolution and more.News
Monitoring online groups offers insight into ISIS attacks
Targeting online groups may be key to limiting the digital reach of ISIS. -
Language
News
Oldest alphabet identified as Hebrew
Contested study indicates ancient Israelites developed first alphabet from Egyptian hieroglyphics.ContextTom Wolfe’s denial of language evolution stumbles over his own words
Tom Wolfe’s book denies that language evolved and attacks Darwin and Chomsky with smugness lacking substance. -
History of Science
Reviews & Previews
How science has fed stereotypes about women
A new book, Inferior, shows how biased research branded women as inferior and aims to set the record straight.Reviews & Previews
This history book offers excellent images but skimps on modern science
For an accessible account of mostly pre-20th century science, check out The Oxford Illustrated History of Science. -
Human Evolution
News
Homo naledi’s brain shows humanlike features
South African Homo species had small but humanlike brain, scientists say.Feature
Animal hybrids may hold clues to Neandertal-human interbreeding
The physical effects of interbreeding among animals may offer clues to Neandertals’ genetic mark on humans.
