News

Archaeology

Ancestors who came in from the cold

Researchers found the remains of a 36,000-year-old human occupation in the Russian Arctic, which represents the earliest evidence of a human presence that far north.

Archaeology

Neandertals used tools with versatility

Microscopic data from artifacts found at two Ukrainian sites indicate that Neandertals used stone tools in flexible ways that allowed them to maintain a broad diet for nearly 50,000 years.

Earth

Dusty workplace may cause change of heart

Occupational exposure to fine dust can trigger adverse changes in the hearts of even strong, healthy workers.

Health & Medicine

Two drugs may enhance recovery from stroke

Two drugs, levodopa and dextroamphetamine, may help stroke patients to recover the ability to move and speak.

Ecosystems

Fierce invader steals nests from a native fish

The round goby, a Eurasian fish that has invaded the Great Lakes, is causing the decline of the mottled sculpin by displacing the native from its spawning sites.

Materials Science

Materials use nitric oxide to kill bacteria

A novel coating may offer a new way to fend off microbial buildup on catheters, artificial hips, and replacement cardiac valves.

Materials Science

Speed demon gets hooked on silicon

A method for coating silicon with high-performance semiconductors such as gallium arsenide may make faster, low-power microcircuits both cheaper and more widespread.

Earth

Bt Corn Risk to Monarchs Is ‘Negligible’

A much-anticipated report states that the most commonly planted forms of genetically engineered Bt corn pose only a "negligible" risk to monarch butterfly populations.

Anthropology

Neandertals show ancient signs of caring

A partial jaw unearthed in France indicates that Neandertals extensively cared for sick and infirm comrades beginning nearly 200,000 years ago.

Earth

Scientists spy sixth undersea-vent ecology

A new group of hydrothermal vents found in the Indian Ocean are populated by communities of organisms that differ significantly from other such groups of vent systems.