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Health & Medicine

Older adults’ brains boosted by more, not better, sleep

A study finds that older adults perform better on a learning and memory task if they have slept more, while uninterrupted rest matters more for younger folks.

Health & Medicine

Brain tells signs from pantomime

Different brain areas light up when deaf people use American Sign Language than when they gesture.

Health & Medicine

Rapid HIV treatment could slow growing TB rates

Widespread yearly testing and immediate treatment with antiretroviral drugs could avert more than 6 million tuberculosis cases in Africa, a new model finds.

Health & Medicine

IVF kids show shift in gene activity

Team finds differences related to metabolism and growth.

Health & Medicine

Possible prostate cancer culprit

Scientists identify a type of stem cell and a gene that play a role in the disease.

Humans

Finding coolable hot spots for crime

Some high-risk areas are easier to manage than others, a new model suggests.

Health & Medicine

Brain at the breaking point

New research, showing how stresses can snap tiny tracks inside brain connections, may improve understanding of traumatic brain injury.

Health & Medicine

Dolphins may offer clues to treating diabetes

Insulin-resistance switch helps maintain glucose levels in dolphin brains, suggesting possible clues to treating diabetes in people.

Health & Medicine

Tumor tracking gets personal

A new method has the potential to use genome science to improve cancer care.

Space

Study raises questions about supernova origins

X-ray observations of the explosions could shift measurements of the mysterious entity known as dark energy.

Humans

Decoding diversity in Bushmen

Decoding the genetic makeup of tribal leaders and Archbishop Desmond Tutu uncovers rich genetic diversity in southern Africans.

Life

Human noise may distract animals

When boats roar, hermit crabs slip up and let predators get extra close