March 30, 2019 | Science News

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March 30, 2019View Digital Issue

Editor's Note

Editor in Chief Nancy Shute discusses the lack of scientific research on CBD.
By Nancy Shute | March 27, 2019
Magazine issue: Vol. 195, No. 6 , March 30, 2019 , p. 2

Features

CBD pizza

Feature

As CBD-laced foods and health products gain popularity, researchers are just beginning to fill the gaping holes in knowledge about this cannabis molecule’s benefits.
Smilodon hunting

Feature

New details shift the debate on whether Smilodon lived and hunted in packs, and answer questions about other behaviors and abilities.

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Help us keep you informed.

Editor's Note

Editor in Chief Nancy Shute discusses the lack of scientific research on CBD.

Features

Smilodon hunting
New details shift the debate on whether Smilodon lived and hunted in packs, and answer questions about other behaviors and abilities.
CBD pizza
As CBD-laced foods and health products gain popularity, researchers are just beginning to fill the gaping holes in knowledge about this cannabis molecule’s benefits.

News

Kepler 1658b
Astronomers had dismissed the first exoplanet candidate spotted by the Kepler space telescope as a false alarm.
HIV virions
A second person with HIV has gone into remission after receiving blood stem cells from a donor unable to make a protein needed by the virus.
galaxy cluster rings
The gravitational pull of subatomic particles born in the universe’s first second seem to influence how galaxies cluster into rings.
black bear eating trash
Wild black bears snacking on leftovers of sugary, highly processed foods in Colorado show possible signs of faster cellular wear.
high-fiber food
A high-fiber diet, which boosts the diversity of gut microbes, may make an immune therapy against skin cancer more effective.
fishing spider eating a tadpole
By documenting rare events of invertebrates eating small vertebrates, scientists are shedding new light on the Amazon rainforest’s intricate ecosystem.
dog sniffing grass
Genes and stress may change a person’s body odor, confusing police dogs.
Alston’s singing mouse
A precise timing system in the brain helps musical rodents from the cloud forests of Costa Rica sing to one another.
people shaking hands
Two new studies show that even brief contact with another person or object could transfer your DNA far and wide.
land hermit crab
A new study finds that the smell of hermit crab flesh attracts other hermit crabs of the same species desperately looking for a larger shell.
black hole formation
A stream of particles created in a neutron star crash, detected in 2017 using gravitational waves, could explain certain mysterious flashes of light.
ketamine laboratory
A nasal spray with a ketamine-based drug promises faster relief from depression for some people.
rabbit bones
Stone Age groups in Europe put small game on the menu surprisingly early.
green icebergs
Scientists originally thought the green hue of some icebergs came from carbon particles. Instead, iron oxides may color the ice.
kids with mosquito bed nets
A lab test suggests it may be possible to treat mosquitoes infected with the malaria parasite to stop disease transmission.

Notebook

2000-year-old tattoo tool
The artifact is made of two pigment-stained cactus spines, and has been sitting in storage since its discovery in 1972.
exploding grape
Electromagnetic waves bounce back and forth inside a grape, creating plasma.
doctor
In 1969, physicians abused drugs at a higher rate than the general public — that’s still true today.
Green Bank Telescope
Astronomers are hoping to make looking for alien technology an official science goal of NASA.
haddock
Warming water due to climate change is diminishing sustainable fishery yields in the world’s oceans.

Reviews & Previews

tiger
‘No Beast So Fierce’ examines the historical and environmental factors that turned a tiger in Nepal and India into a human-killer.
Apple headquarters
In ‘The Big Nine,’ futurist Amy Webb explores the political and economic factors that are shaping artificial intelligence.

Letters to the Editor

Readers had comments and questions about robots in classrooms, benzodiazepines and more.

Science Visualized

microscopic water droplets showing iridescent rings of colored light
Viewed from various angles, tiny droplets of water or oil glow different colors under white light.