'Bouncing' comets could deliver building blocks for life to exoplanets

How did the molecular building blocks for life end up on Earth? One long-standing theory is…

Non-native species likely to continue spreading in North America, Australia and Europe

Naturalized species, which are not native but have established themselves in new locations, have the potential…

Ultrafine particles from traffic disturb human olfactory cell function

Exposure to ultrafine particles from traffic alters the expression of many genes in human olfactory mucosa…

Galactic 'lightsabers': Answering longstanding questions about jets from black holes

The one thing everyone knows about black holes is that absolutely everything nearby gets sucked into…

Researchers identify unexpected twist while developing new polymer-based semiconductors

Chemists bring fresh insight into the development of semiconductor materials that can do things their traditional…

How tiny hinges bend the infection-spreading spikes of a coronavirus

Far from being stiff and pointy, a coronavirus’s infectious spikes are shaped like chicken drumsticks with…

How teachers would handle student violence against educators

For the first time, teachers in a nationwide study have told researchers what strategies they think…

Hormonal contraceptives in teens may alter risk assessment, rat study suggests

Hormonal contraceptives taken by adolescents may influence development of the brain in a way that alters…

Reducing systolic blood pressure to less than 120 mm Hg reduced cardiovascular event risk

An intensive three-year intervention to lower the top blood pressure number to less than 120 mm…

Reducing systolic blood pressure to less than 120 mm Hg reduced cardiovascular event risk

An intensive three-year intervention to lower the top blood pressure number to less than 120 mm…