November 14, 2015 | Science News

Support Science Journalism

Science News is a nonprofit.

Support us by subscribing now.

November 14, 2015

Editor's Note

New methods, coupled with new attitudes, are revising ideas about Earth's boring billion.
By Eva Emerson | November 4, 2015
Magazine issue: Vol. 188 No. 10 , November 14, 2015 , p. 2

Features

brain blood vessels

Feature

Instead of just responding to the energy needs of neurons, the blood can have a direct and powerful influence on the brain.
Nuna supercontinent

Feature

The Mesoproterozoic era, known as the boring billion, had very low oxygen, but it set the stage for the evolution of animals.

Call to Action

SUPPORT SCIENCE NEWS

Science News is a nonprofit.

Help us keep you informed.

Editor's Note

New methods, coupled with new attitudes, are revising ideas about Earth's boring billion.

Features

Nuna supercontinent
The Mesoproterozoic era, known as the boring billion, had very low oxygen, but it set the stage for the evolution of animals.
brain blood vessels
Instead of just responding to the energy needs of neurons, the blood can have a direct and powerful influence on the brain.

News

Claims about the cancer drug sunitinib are overblown because of poorly designed studies and negative results that were never published, a new analysis suggests.
Truvada pill
After a history of controversy, preexposure prophylaxis has been demonstrated to work for HIV prevention.
nerve cells from different parts of the mouse brain
Tough structures that swaddle nerve cells may store long-term memories.
Hints of Huntington’s disease show up in the brain long before symptoms do.
mammoth tusks
Hunters responsible for woolly mammoths’ extinction, suggests a chemical analysis of juveniles’ tusks.
dimetrodon fossil
The reptilelike Dimetrodon dined mainly on amphibians and sharks, not big herbivores as scientists once believed.
hunter gatherers
Hunter-gatherer communities in Africa and South America have similar sleeping patterns as people living in postindustrial societies, researchers find.
ancient human teeth
Cave finds indicate modern humans reached southern China long before entering Europe.
CRISPR/Cas9 disables multiple viruses at one time
Although scientists have largely viewed skin as an unimportant portal to blood for toxic air pollutants, new human data show that skin can surpass lungs as a route of entry.
Mota Cave
Ancient man’s DNA helps reveal extent of Eurasian farmers’ back-to-Africa migration some 3,000 years ago.
horse fetus fossil
A 48-million-year-old fossil of an early horse and fetus is the oldest and best-preserved specimen of its kind.
star
Representatives from the first generation of stars might be hiding in our cosmic backyard, masked by interstellar pollution.
Comet Lovejoy
Sugar and alcohol are just two of the ingredients that go into making a comet.
white dwarf
Rocky planets are disintegrating around a white dwarf, the core of a dead star.
Lampyris noctiluca
Brighter female glowworms attract more mates and lay more eggs than their dimmer peers.
A multiethnic family
Young Americans are more genetically diverse than previous generations, a new DNA analysis reveals.
gut microbes
Certain microbial mixes are associated with particular DNA mutations in colon cancer, a new study suggests.
electrons
Silicon transistors have been modified and patched together to form logic gates that could perform calculations in future quantum computers.
gay pride flag
DNA marks distinguished homosexual men from heterosexual men with in a small twin study.

Notebook

illustration of giant sea scorpion
Earliest sea scorpion discovered in impact crater in Iowa.
hunchbacked conchs
Hunchbacked conchs are among the most vigorous of snailkind’s few jumpers.
brain schematic
A pioneering study to transplant a dog’s brain led to later work on a monkey, but ethical considerations and technical know-how have prevented further work.
Ceres map
A host of agricultural spirits are immortalized on several craters and mountains on the dwarf planet Ceres.
a herd of elephants
An extra dose of cancer-fighting genes may be the secret to elephants’ long life spans.

Reviews & Previews

Missteps are a must in science, biologist argues in new book.
Mongol illustration
It was a long, strange trip from the first Eurasian farmers to the modern world.
In "On the Wing," a biomechanicist reviews how animals took to the air.

Letters to the Editor

Letters and comments from readers on quantum spookiness, Earth's magnetic field, and more.

Science Visualized

diagram of microbial influence in animal kingdom
A network diagram of animal species shows that many microbes living in humans also make themselves at home in dogs, pigs and cattle.