Interactions between bacteria and parasites

A team has completed the first study of the effects of a simultaneous infection with blood flukes (schistosomes) and the bacterium Helicobacter pylori — a fairly common occurrence in some parts of the world. They identified a complex interaction which resulted — among other effects — in a weakening of the adverse impact of the pathogens acting individually.

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Supportive relationships in childhood leads to longer lives

Individuals raised in families with higher socioeconomic status were more optimistic in midlife, and in turn, lived longer. Those who experienced more psychosocial stressors, such as parental death, frequent moves and harsh discipline, tended to encounter more stressful life events in midlife, and had greater risk of dying early.

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Ecologists find strong evidence of fishing down the food web in freshwater lake

Research by ecologists shows strong evidence in a freshwater lake of 'fishing down the food web' – the deliberate shift away from top predatory fish on the food chain to smaller species closer to the base. While the effect has historically been observed almost exclusively in marine ecosystems and ocean fisheries, there has been little evidence of the effect in freshwater ecosystems.

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Prevalence of screening for social needs

A new study finds that most US physician practices and hospitals report screening patients for at least one social need, a trend that is expected to increase in the future, and that practices that care for disadvantaged patients report higher screening rates.

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Porcupinefish inspires sturdy superhydrophobic material

Nature has evolved a dazzling array of materials that help organisms thrive in diverse habitats. Sometimes, scientists can exploit these designs to develop useful materials with similar or completely new functions. Now, researchers have made a durable and flexible super-water-repelling material inspired by spiky porcupinefish skin.

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New hunt for dark matter

Dark matter is only known by its effect on massive astronomical bodies, but has yet to be directly observed or even identified. A theory about what dark matter might be suggests that it could be a particle called an axion and that these could be detectable with laser-based experiments that already exist. These laser experiments are gravitational-wave observatories.

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