Comparing PET scans of more than 90 adults with and without mild cognitive impairment (MCI), Johns Hopkins Medicine researchers say relatively lower levels of the so-called "happiness" chemical, serotonin, in parts of the brain of those with MCI may pla

A groundbreaking study by researchers at Case Western Reserve University suggests a class of medications used to treat type 2 diabetes may also reduce the risk of colorectal cancer (CRC).

Despite the Roman Empire's extensive military and cultural influence on the nearby Balkan peninsula, a DNA analysis of individuals who lived in the region between 1 and 1000 CE found no genetic evidence of Iron Age Italian ancestry. Instead, a study publ

Patients who received the anticoagulant drug warfarin after bioprosthetic aortic valve replacement had lower incidence of mortality and a decreased risk of blood clots, according to a retrospective study published in Mayo Clinic Proceedings.

A preclinical study by Weill Cornell Medicine investigators shows that a specific human genetic variant of a receptor that stimulates insulin release may help individuals be more resistant to obesity. The researchers discovered that this variant behaves d

Designing new compounds or alloys whose surfaces can be used as catalysts in chemical reactions can be a complex process relying heavily on the intuition of experienced chemists. A team of researchers at MIT has devised a new approach using machine learni

Brain tumours, brain haemorrhages and neurological and psychological conditions are often hard to treat with medication. And even when effective drugs are available, these tend to have severe side effects because they circulate throughout the brain and no

19世纪，美国历史上一些最强的地震袭击了北美大陆内陆。一项新的研究发现，近两个世纪后，美国中部和东部可能仍在经历这些事件的余震。

马里兰大学旨在应对全球气温上升的研究人员开发了一种新的“冷却玻璃”，可以利用寒冷的太空深处，在没有电的情况下降低室内的热量。

在《自然天文学》上发表的一项研究中，新泽西理工学院日地研究中心的天文学家对一个异常的极光状显示进行了详细的无线电观测，该显示发生在太阳上一个相对黑暗寒冷的区域（即太阳黑子）上方40000公里处。

欧洲鳞翅目（蝴蝶和飞蛾）目前已知约有11000种，通常被认为是经过充分研究的。然而，科学杂志《ZooKeys》上描述的几何蛾科的一个新属和新物种讲述了一个不同的故事。德国、奥地利和英国的一个研究小组将这种蛾命名为Mirlatia arcuata，是近几十年来鳞翅目中最引人注目的发现之一。

关于黑洞，每个人都知道的一件事是，附近的一切都会被吸入黑洞。