Health & Fitness

According to a new study that examined memory in expert birdwatchers, having expert knowledge in a subject helps us memorize new information. This is because, while forgetting often happens when similar memories interfere with each other, expert knowledge provides a mental organizational structure, or scaffolding, that helps us keep new items that we want to learn distinct from each other. This reduces confusion between similar items -- in this case, similar-looking birds.

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In a new paper, researchers challenge the longstanding view that the force of natural selection in humans must decline to zero once reproduction is complete. They assert that a long post-reproductive lifespan is not just due to recent advancements in health and medicine. The secret to our success? Our grandparents.

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Scientists have identified the neural mechanisms through which sound blunts pain in mice. The findings could inform development of safer methods to treat pain.

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Researchers say they may have found the reason why multiple human clinical trials of staphylococcus vaccines have failed: the bacteria knows us too well.

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One often thinks that the early embryo is fragile and needs support. However, at the earliest stages of development, it has the power to feed the future placenta and instructs the uterus so that it can nest. Using 'blastoids', in vitro embryo models formed with stem cells, scientists have shown that the earliest molecular signals that induce placental development and prepare the uterus come from the embryo itself.

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Researchers describe a new method to identify all of the unidentified molecules derived from food, providing a direct way to link molecules in diet to health outcomes.

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