News
- Health & Medicine
New sources and uses for stem cells
Human skin and scalp tissue may provide a source of neural stem cells.
- Physics
An electron ruler gauges crystal flaws
Electrons ricocheting through a crystal now make it possible for scientists to discern shifts in crystal lattices as small as a hundredth of an atom's width.
- Ecosystems
Fly may be depleting U.S. giant silk moths
A parasitic fly introduced to fight gypsy moths starting in 1906 may be an overlooked factor in the declines of giant silk moths.
- Health & Medicine
Vaccine protects monkeys from Ebola virus
A combination of a DNA vaccine and a vaccine based on a genetically modified common cold virus enables monkeys to resist Ebola virus, the first evidence that an Ebola vaccine works in primates.
-
Certain memories may rest on a good sleep
People who practice a task that demands quick visual processing perform it better on ensuing trials if they are first allowed to get some sleep.
- Planetary Science
An early cosmic wallop for life on Earth?
New evidence from lunar meteorites suggests that debris bombarded the moon some 3.9 billion years ago, about the same time that life may have formed on Earth.
- Math
Prime proof zeros in on crucial numbers
A new theorem may lead to a proof of Catalan's conjecture, a venerable problem in number theory concerning consecutive powers of whole numbers.
- Animals
First mammal joins the eusocial club
Because naked mole rats exhibit permanent physical traits that distinguish certain castes of a colony, they belong to the same grouping as so-called eusocial insects such as bees, ants, wasps, and termites.
- Earth
Life Landed 2.6 Billion Years Ago
Unusually carbon-rich rocks found in eastern South Africa may push back the evidence of life on land to 2.6 billion years ago, more than twice the current age of indisputably terrestrial organisms.
- Health & Medicine
Dormant Cancer: Lack of a protein sends tumor cells to bed
Excess amounts of a protein called Myc triggers cancer in mice, but ratcheting back this supply sends the malignant cells into dormancy.
- Earth
Change in the Weather? Wind farms might affect local climates
Large groups of power-generating windmills could increase wind speed, temperature, and ground-level evaporation, thereby influencing a region's climate.
- Health & Medicine
Fat Fuels PCB Damage: Diet influences toxic effects leading to heart disease
Certain types of dietary fats can magnify PCB damage to artery cells in a way that sets the stage for cardiovascular disease.
